Author Publications

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Number of items: 104.

2013

Dildar, I.M. and Boltje, D.B. and Hesselberth, M.H.S. and Aarts, J. and Xu, Q. and Zandbergen, H.W. and Harkema, S. (2013) Non-conducting interfaces of LaAlO3/SrTiO3 produced in sputter deposition: The role of stoichiometry. Applied physics letters, 102 (12). 121601 - . ISSN 0003-6951

2012

Dildar, I.M. and Boltje, D. and Hesselberth, M.B.S. and Xu, Q. and Zandbergen, H.W. and Harkema, S. and Aarts, J. (2012) Conductivity of LaAlO3/SrTiO3 Interfaces Made by Sputter Deposition. e-Journal of surface science and nanotechnology, 10 . 619 - 623. ISSN 1348-0391

Kleibeuker, J.E. and Kuiper, B. and Harkema, S. and Blank, D.H.A. and Koster, G. and Rijnders, A.J.H.M. and Tinnemans, P. and Vlieg, E. and Rossen, P.B. and Siemons, W. and Portale, G. and Ravichandran, J. and Szepieniec, J. and Ramesh, R. (2012) Structure of singly terminated polar DyScO3 (110) surfaces. Physical review B: Condensed matter and materials physics, 85 (16). 165413 - . ISSN 1098-0121

Vonk, V. and Huijben, J. and Kukuruznyak, D. and Stierle, A. and Hilgenkamp, H. and Brinkman, A. and Harkema, S. (2012) Polar-discontinuity-retaining A-site intermixing and vacancies at SrTiO3/LaAlO3 interfaces. Physical review B: Condensed matter, 85 (4). 1 - 5. ISSN 0163-1829

2009

Geskus, D. and Aravazhi, S. and Bernhardi, E. and Grivas, C. and Harkema, S. and Hametner, K. and Günther, D. and Wörhoff, K. and Pollnau, M. (2009) Low-threshold, highly efficient $Gd^{3+}$, $Lu^{3+}$ co-doped $KY(WO_4)_2:Yb^{3+}$ planar waveguide lasers. Laser Physics Letters, 6 (11). pp. 800-805. ISSN 1612-2011

2007

Kia, Reza and Mirkhani, Valiollah and Harkema, Sybolt and Hummel, Gerrit J. van (2007) Synthesis and characterization of the 1:1 adducts of copper(I) halides with bidentate N,N′-bis(benzophenone)-1,2-diiminoethane Schiff base: Crystal structures of [Cu(bz2en)2][CuX2] (X = Br, I) complexes. Inorganica Chimica Acta, 360 (10). pp. 3369-3375. ISSN 0020-1693

Vonk, V. and Driessen, K.J.I. and Huijben, M. and Rijnders, A.J.H.M. and Blank, D.H.A. and Rogalla, H. and Harkema, S. and Graafsma, H. (2007) Initial Structure and Growth Dynamics of YBa2Cu3O7-delta during Pulsed Laser Deposition. Physical Review Letters, 99 (19). p. 196106. ISSN 0031-9007

Vonk, V. and Driessen, K.J.I. and Tinnemans, P. and Brinkman, A. and Harkema, S. and Graafsma, H. (2007) Interface structure of SrTiO3/LaAlO3 at elevated temperatures studied in situ by synchrotron x rays. Physical Review B: Condensed matter and materials physics, 75 (23). p. 235417. ISSN 1098-0121

2006

Kirtley, J.R. and Tsuei, C.C. and Ariando, and Verwijs, C.J.M. and Harkema, S. and Hilgenkamp, H. (2006) Angle-resolved phase-sensitive determination of the in-plane gap symmetry in YBa2Cu3O7−δ. Nature physics, 2 . pp. 190-194. ISSN 1745-2473

2005

Smilde, H.J.H. and Golubov, A.A. and Ariando, and Rijnders, G. and Dekkers, J.M. and Harkema, S. and Blank, D.H.A. and Rogalla, H. and Hilgenkamp, H. (2005) Admixtures to d-Wave Gap Symmetry in Untwinned YBa2Cu3O7 Superconducting Films Measured by Angle-Resolved Electron Tunneling. Physical Review Letters, 95 (25). pp. 257001-1. ISSN 0031-9007

Vonk, V. and Konings, S. and Hummel, G.J. van and Harkema, S. and Graafsma, H. (2005) Scanning tunneling microscopy; Silicon; Single crystal surfaces. Surface Science, 595 (1-3). pp. 183-193. ISSN 0039-6028

2004

Mirkhani, Valiollah and Harkema, Sybolt and Kia, Reza (2004) Bis[N,N'-bis(diphenylmethylene)ethylenediamine-2N,N']copper(I) dichlorocuprate(I). Acta Crystallographica Section C: Crystal structure communications, 60 (7). m343-m344. ISSN 0108-2701

Vonk, V. and Reeuwijk, S.J. van and Dekkers, J.M. and Harkema, S. and Rijnders, A.J.H.M. and Graafsma, H. (2004) Strain-induced structural changes in thin YBa2Cu3O7−x films on SrTiO3 substrates. Thin Solid Films, 449 (1-2). pp. 133-137. ISSN 0040-6090

2003

Dekkers, J. Matthijn and Rijnders, Guus and Harkema, Sybolt and Smilde, Henk Jan H. and Hilgenkamp, Hans and Rogalla, Horst and Blank, Dave H.A. (2003) Monocrystalline YBa2Cu3O7-x thin films on vicinal SrTiO3 (001) substrates. Applied Physics Letters, 83 (25). pp. 5199-5201. ISSN 0003-6951

2001

Brinkman, A. and Mijatovic, D. and Rijnders, G. and Leca, V. and Smilde, H.J.H. and Oomen, I. and Golubov, A.A. and Roesthuis, F.J.G. and Harkema, S. and Hilgenkamp, H. and Blank, D.H.A. and Rogalla, H. (2001) Superconducting thin films of MgB2 on Si by pulsed laser deposition. Physica C: Superconductivity, 353 (1-2). pp. 1-4. ISSN 0921-4534

Niesten, M.C.E.J. and Harkema, S. and Heide, E. van der and Gaymans, R.J. (2001) Structural changes of segmented copolyetheresteramides with uniform aramid units induced by melting and deformation. Polymer, 42 (3). pp. 1131-1142. ISSN 0032-3861

1999

Boerrigter, H. and Verboom, W. and Hulst, A.J.R.L. and Hummel, G.J. van and Harkema, S. and Reinhoudt, D.N. (1999) Study of conformational behavior of CMP(O)-cavitands by NMR spectroscopy and X-ray analysis in relation to the extraction properties. In: NMR in Supramolecular Chemistry. Kluwer Academic Publishers, Dordrecht, pp. 19-35. ISBN 9780792356219

1998

Graafsma, H. and Souhassou, M. and Puig-Molina, A. and Harkema, S. and Kvick, A. and Lecomte, C. (1998) Towards extinction-free experimental diffraction data on Al2O3. Acta Crystallographica Section B: Structural Science, 54 (2). pp. 193-195. ISSN 0108-7681

Harkema, Sybolt and Loon, Jan-Dirk van and Verboom, Willem and Reinhoudt, David N. (1998) 15,17-Di-2-propenylcalix[4]arene-25,26,27,28-tetrol: self-complexation and C-H...O interactions. Acta Crystallographica Section C: Crystal structure communications, 54 (2). pp. 269-271. ISSN 0108-2701

Kenis, Paul J.A. and Kerver, Esther G. and Snellink-Ruel, Bianca H.M. and Hummel, Gerrit J. van and Harkema, Sybolt and Flipse, Marinus C. and Woudenberg, Richard H. and Engbersen, Johan F.J. and Reinhoudt, David N. (1998) High hyperpolarizabilities of donor-p-acceptor-functionalized calix[4]arene derivatives by pre-organization of chromophores. European Journal of Organic Chemistry, 1998 (6). pp. 1089-1098. ISSN 1434-193X

Kenis, Paul J.A. and Noordman, Oscar F.J. and Houbrechts, Stephan and Hummel, Gerrit J. van and Harkema, Sybolt and Veggel, Frank C.J.M. van and Clays, Koen and Engbersen, Johan F.J. and Persoons, Andre and Hulst, Niek F. van and Reinhoudt, David N. (1998) Second-order nonlinear optical properties of the four tetranitrotetrapropoxycalix[4]arene conformers. Journal of the American Chemical Society, 120 (31). pp. 7875-7883. ISSN 0002-7863

Kenis, Paul J.A. and Noordman, Oscar F.J. and Schönherr, Holger and Kerver, Esther G. and Snellink-Ruel, Bianca H.M. and Hummel, Gerrit J. van and Harkema, Sybolt and Vorst, C.P.J.M. van der and Hare, J. and Picken, S.J. and Engbersen, Johan F.J. and Hulst, Niek F. van and Vancso, G. Julius and Reinhoudt, David N. (1998) Supramolecular materials: molecular packing of tetranitrotetrapropoxycalix[4]arene in highly stable films with second-order nonlinear optical properties. Chemistry: a European journal, 4 (7). pp. 1225-1234. ISSN 0947-6539

Schönherr, Holger and Kenis, Paul J.A. and Engbersen, Johan F.J. and Harkema, Sybolt and Hulst, Ron and Reinhoudt, David N. and Vancso, G. Julius (1998) Scanning force microscopy studies on molecular packing and friction anisotropy in thin films of tetranitrotetrapropoxycalix[4]arene. Langmuir, 14 (10). pp. 2801-2809. ISSN 0743-7463

1997

Oude Wolbers, Manon P. and Veggel, Frank C.J.M. van and Heeringa, Remco H.M. and Hofstraat, Johannes W. and Geurts, Frank A.J. and Hummel, Gerrit J. van and Harkema, Sybolt and Reinhoudt, David N. (1997) Biscalix[4]arene ligands for dinuclear lanthanide ion complexation. Liebigs Annalen/Recueil, 1997 (12). pp. 2587-2600. ISSN 0947-3440

Struck, Oliver and Chrisstoffels, Lysander A.J. and Lugtenberg, Ronny J.W. and Verboom, Willem and Hummel, Gerrit J. van and Harkema, Sybolt and Reinhoudt, David N. (1997) Head-to-head linked double calix[4]arenes: convenient synthesis and complexation properties. Journal of Organic Chemistry, 62 (8). pp. 2487-2493. ISSN 0022-3263

Verboom, Willem and Struck, Oliver and Reinhoudt, David N. and Duynhoven, John P.M. van and Hummel, Gerrit J. van and Harkema, Sybolt and Udachin, Konstatin A. and Ripmeester, John A. (1997) Clathration of properly functionalized calix[4]arenes: C-13 CP-MAS NMR spectroscopy and X-ray crystallography. Gazzetta Chimica Italiana, 127 . pp. 727-739. ISSN 0016-5603

1996

Boerrigter, Harold and Verboom, Willem and Hummel, Gerrit J. van and Harkema, Sybolt and Reinhoudt, David N. (1996) Selective functionalization of resorcinarene cavitands; single crystal X-ray structure of a distally functionalized cavitand. Tetrahedron Letters, 37 (29). pp. 5167-5170. ISSN 0040-4039

Janssen, Rob G. and Duynhoven, John P.M. van and Verboom, Willem and Hummel, Gerrit J. van and Harkema, Sybolt and Reinhoudt, David N. (1996) Studies on the dynamics of phosphorylated p-tert-butylcalix[6]arenes by using 2D NMR spectroscopy. Journal of the American Chemical Society, 118 (15). pp. 3666-3675. ISSN 0002-7863

Kelderman, Erik and Verboom, Willem and Engbersen, Johan F.J. and Reinhoudt, David N. and Harkema, Sybolt (1996) trans-(3aR)-1,2,3,3a-Tetrahydro-3a-(methoxymethyl)-5-methyl-7-nitropyrrolo[1,2-a]quinoline 4,4(5H)-dicarbonitrile: four independent molecules in the unit cell. Acta Crystallographica Section C: Crystal structure communications, 52 (2). pp. 458-460. ISSN 0108-2701

Struck, Oliver and Duynhoven, John P.M. van and Verboom, Willem and Harkema, Sybolt and Reinhoudt, David N. (1996) Cavity effect of calix[4]arenes in electrophilic aromatic substitution reactions. Journal of the Chemical Society, Chemical communications, 1996 (13). pp. 1517-1518. ISSN 0022-4936

Veggel, Frank C.J.M. van and Duynhoven, John P.M. van and Harkema, Sybolt and Oude Wolbers, Manon P. and Reinhoudt, David N. (1996) Solid-state structure, dynamical properties in solution and computational studies of a new sodium hemispherand complex. Journal of the Chemical Society. Perkin transactions II, 1996 (3). pp. 449-454. ISSN 0300-9580

Verboom, Willem and Vreekamp, Remko H. and Bodewes, Paul J. and Harkema, Sybolt and Reinhoudt, David N. (1996) 5,17-Bis(acetamido-25,26,27,28-tetrapropoxycalix[4]arene; the first example of two different pinched cone conformations in the solid state. Recueil des Travaux Chimiques des Pays-Bas (1920), 115 . pp. 402-406. ISSN 0165-0513

1995

Ting, Yuhua and Verboom, Willem and Reinhoudt, David N. and Harkema, Sybolt (1995) 1,3-diethoxy-2,4-didehydroxy-p-tert-butylcalix[4]arene. Acta Crystallographica Section C: Crystal structure communications, 51 (7). pp. 1465-1467. ISSN 0108-2701

Verboom, Willem and Bodewes, Paul J. and Essen, Georget van and Timmerman, Peter and Hummel, Gerrit J. van and Harkema, Sybolt and Reinhoudt, David N. (1995) A novel approach to inherently chiral calix[4]arenes by direct introduction of a substituent at the meta position. Tetrahedron, 51 (2). pp. 499-512. ISSN 0040-4020

Visser, Herman C. and Vink, Remco and Snellink-Ruel, Bianca H.M. and Kokhuis, Simone B.M. and Harkema, Sybolt and Jong, Feike de and Reinhoudt, David N. (1995) Alkali-cation transport through supported liquid membranes mediated by solvent-linked carriers. Recueil des Travaux Chimiques des Pays-Bas (1920) . pp. 285-294. ISSN 0165-0513

1994

Iwema Bakker, Wouter I. and Haas, Marijke and Khoo-beattie, Corinne and Ostaszewski, Ryszard and Franken, Sybille M. and Hertog, Herman J. den and Verboom, Willem and Zeeuw, Dick de and Harkema, Sybolt and Reinhoudt, David N. (1994) Kinetically stable complexes of alkali cations with calixspherands: an evaluation of shielding. Journal of the American Chemical Society, 116 (1). pp. 123-133. ISSN 0002-7863

Reichwein, Arjen M. and Verboom, Willem and Harkema, Sybolt and Spek, Anthony L. and Reinhoudt, David N. (1994) Calix salophen crown ethers as receptors for neutral molecules. Journal of the Chemical Society. Perkin transactions II, 1994 (6). pp. 1167-1172. ISSN 0300-9580

Rudkevich, Dmitry M. and Verboom, Willem and Brzozka, Zbigniew and Palys, Marcin J. and Stauthamer, Walter P.R.V. and Hummel, Gerrit J. van and Franken, Sybille M. and Harkema, Sybolt and Engbersen, Johan F.J. and Reinhoudt, David N. (1994) Functionalized UO2 Salenes: Neutral Receptors for Anions. Journal of the American Chemical Society, 116 (10). pp. 4341-4351. ISSN 0002-7863

Timmerman, Peter and Boerrigter, Harold and Verboom, Willem and Hummel, Gerrit J. van and Harkema, Sybolt and Reinhoudt, David N. (1994) Proximally functionalized cavitands and synthesis of a flexible hemicarcerand. Journal of inclusion phenomena and molecular recognition in chemistry, 19 (1-4). pp. 167-191. ISSN 0923-0750

Timmerman, Peter and Harkema, Sybolt and Hummel, Gerrit J. van and Verboom, Willem and Reinhoudt, David N. (1994) Isolation and X-ray crystal structure of a stable calix[4]arene monohemiketal. Journal of Inclusion Phenomena and Molecular Recognition in Chemistry, 16 (2). pp. 189-197. ISSN 0923-0750

1993

Janssen, Rob G. and Verboom, Willem and Harkema, Sybolt and Hummel, Gerrit J. van and Reinhoudt, David N. and Pochini, Andrea and Ungaro, Rocco and Prados, Pilar and Mendoza, Javier de (1993) Selective phosphorylation of p-tert-butylcalix[6]arene. Journal of the Chemical Society, Chemical communications, 1993 (6). pp. 506-508. ISSN 0022-4936

Kelderman, Erik and Derhaeg, Lode and Verboom, Willem and Engbersen, Johan F.J. and Harkema, Sybolt and Persoons, A. and Reinhoudt, David N. (1993) Calix[4]arenes as molecules for second order nonlinear optics. Supramolecular Chemistry, 1993 (2-3). pp. 183-190. ISSN 1061-0278

Leuwerink, F.T.H. and Harkema, S. and Briels, W.J. and Feil, D. (1993) Molecular dynamics of 18-crown-6 complexes with alkali-metal cations and urea: Prediction of their conformations and comparison with data from the cambridge structural database. Journal of Computational Chemistry, 14 (8). pp. 899-906. ISSN 0192-8651

Verboom, W. and Morzherin, Yury and Kelderman, E. and Engbersen, J.F.J. and Hummel, G.J. van and Harkema, S. and Reinhoudt, D.N. (1993) Synthesis of 2,3-dihydro-1H,4H,6H-furo[3,4-beta]pyrrolo[1,2-alpha]quinoline-6a(7H)-carbonitrile, a novel type of intramolecular tetrahydrofuran formation. Recueil des Travaux Chimiques des Pays-Bas (1920), 112 . pp. 549-551. ISSN 0165-0513

1992

Brunink, Jos A.J. and Verboom, Willem and Engbersen, Johan F.J. and Harkema, Sybolt and Reinhoudt, David N. (1992) Synthesis and cation complexation selectivity of bis(syn-proximally) functionalized calix[4]arenes. Recueil des Travaux Chimiques des Pays-Bas (1920), 111 (12). pp. 511-516. ISSN 0165-0513

Bugge, Kjell-Erik and Verboom, Willem and Reinhoudt, David Nicolaas and Harkema, Sybolt (1992) Ethanol complex of 1,3-diethoxy-p-tert-butylcalix[4]arene. Acta Crystallographica Section C: Crystal structure communications, 48 (10). pp. 1848-1851. ISSN 0108-2701

Doorn, A.R. van and Verboom, W. and Harkema, S. and Reinhoudt, D.N. (1992) Synthesis of uranyl salophene metallo-macrocycles with additional functional groups. Synthesis, 1992 (1-2). pp. 119-122. ISSN 0039-7881

Egberink, Richard J.M. and Cobben, Peter L.H.M. and Verboom, Willem and Harkema, Sybolt and Reinhoudt, David N. (1992) Högberg compounds with a functionalized box-like cavity. Journal of Inclusion Phenomena and Molecular Recognition in Chemistry, 12 (1-4). pp. 151-158. ISSN 0923-0750

Eijk, Peter J.S.S. van and Verboom, Willem and Reinhoudt, David N. and Harkema, Sybolt (1992) N,N-diethyl-2-[2-(hydroxyimino)cyclohexylidene]propanamide. Acta Crystallographica Section C: Crystal structure communications, 48 (10). pp. 1886-1887. ISSN 0108-2701

Eijk, Peter J.S.S. van and Verboom, Willem and Reinhoudt, David N. and Harkema, Sybolt (1992) N,N-diethyl-6-(hydroxyimino)-α-methyl-l-cyclohexene-l-acetamide. Acta Crystallographica Section C: Crystal structure communications, 48 (10). pp. 1884-1886. ISSN 0108-2701

Groenen, Leo C. and Brunink, Jos A.J. and Iwema Bakker, Wouter I. and Harkema, Sybolt and Wijmenga, Sybren S. and Reinhoudt, David N. (1992) A conformational study of the calixspherand and its complexes with alkali-metal cations. Journal of the Chemical Society. Perkin transactions II, 1992 (12). pp. 1899-1906. ISSN 0300-9580

Kelderman, E. and Verboom, W. and Engbersen, J.F.J. and Harkema, S. and Heesink, G.J.T. and Lehmusvaara, E. and Hulst, N.F. van and Reinhoudt, D.N. and Derhaeg, L. and Persoons, A. (1992) Chiral pyrrolo[1,2-a]quinolines as second-order nonlinear optical materials. Chemistry of Materials, 4 (3). pp. 626-631. ISSN 0897-4756

Kraft, Dagmar and Cacciapaglia, Roberta and Böhmer, Volker and Abu el-fadl, A. and Harkema, Sybolt and Mandolini, Luigi and Reinhoudt, David N. and Verboom, W. and Vogt, Walter (1992) New crown ether-like macrocycles containing a nitrophenol unit. Synthesis and metal ion effects on the reactivity of their acetates in transacylation reactions. Journal of Organic Chemistry, 57 (3). pp. 826-834. ISSN 0022-3263

Rudkevich, Dmitry M. and Stauthamer, Walter P.R.V. and Verboom, Willem and Engbersen, Johan F.J. and Harkema, Sybolt and Reinhoudt, David N. (1992) UO2-salenes: neutral receptors for anions with a high selectivity for dihydrogen phosphate. Journal of the American Chemical Society, 114 (114). pp. 9671-9673. ISSN 0002-7863

Timmerman, Peter and Mook, Maarten G.A. van and Verboom, Willem and Hummel, Gerrit J. van and Harkema, Sybolt and Reinhoudt, David N. (1992) Selective functionalization of cavitands: synthesis of a new hemicarcerand. Tetrahedron Letters, 33 (23). pp. 3377-3380. ISSN 0040-4039

Veggel, Frank C.J.M. van and Harkema, Sybolt (1992) Structure of 2-[(4-cyanophenyl)methylene]-1,3-dithiole-4,5-dicarboxylic acid, dimethyl ester. Acta Crystallographica Section C: Crystal structure communications, 48 . pp. 393-395. ISSN 0108-2701

Verboom, Willem and Datta, Sumana and Asfari, Zouhair and Harkema, Sybolt and Reinhoudt, David N. (1992) Tetra-O-alkylated calix[4]arenes in the 1,3-alternate conformation. Journal of Organic Chemistry, 57 (57). pp. 5394-5398. ISSN 0022-3263

1991

Dijkstra, Pieter Jelle and Hertog, Herman Johannes den and Reinhoudt, David Nicolaas and Harkema, Sybolt (1991) Complexation of water by a 4-phenylpyridohemispherand. Acta Crystallographica Section C: Crystal structure communications, 47 (1). pp. 225-227. ISSN 0108-2701

Doorn, Arie R. van and Bos, Martinus and Harkema, Sybolt and Eerden, Johan van and Verboom, Willem and Reinhoudt, David N. (1991) Molecular recognition of neutral molecules by metalloclefts: synthesis, X-ray structure $1$H NMR spectroscopy, electrochemistry and molecular modelling. Journal of Organic Chemistry, 56 (7). pp. 2371-2380. ISSN 0022-3263

Doorn, Arie R. van and Schaafstra, Robert and Bos, Martinus and Harkema, Sybolt and Eerden, Johan van and Verboom, Willem and Reinhoudt, David N. (1991) Molecular recognition of polar neutral molecules by metallomacrocycles: synthesis, $1$H NMR spectroscopy, X-ray structure, electrochemistry and ab initio calculations. Journal of Organic Chemistry, 56 (21). pp. 6083-6094. ISSN 0022-3263

Groenen, Leo C. and Loon, Jan-Dirk van and Verboom, Willem and Harkema, Sybolt and Casnati, Alessandro and Ungaro, Rocco and Pochini, Andrea and Ugozzoli, Franco and Reinhoudt, David N. (1991) The 1,2-alternate conformation of calix[4]arenes: a rare comformation? Dynamic $1$H NMR studies of flexible tetraalkylated calix[4]arenes. Journal of the American Chemical Society, 113 (7). pp. 2385-2392. ISSN 0002-7863

Groenen, Leo C. and Ruel, Bianca H.M. and Casnati, Alessandro and Timmerman, Peter and Verboom, Willem and Harkema, Sybolt and Pochini, Andrea and Ungaro, Rocco and Reinhoudt, David N. (1991) Syn-1,2-dialkylated calix[4]arenes: general intermediates in the NaH/DMF tetraalkylation of calix[4]arenes. Tetrahedron Letters, 32 (23). pp. 2675-2678. ISSN 0040-4039

Veggel, Frank C.J.M. van and Bos, Martinus and Harkema, Sybolt and Bovenkamp, Henry van de and Verboom, Willem and Reedijk, Jan and Reinhoudt, David N. (1991) Macrocyclic trinucleating ligands for the cocomplexation of two 'soft' (Cu2+, Ni2+ or Zn2+) metal centers and one 'hard' (Ba2+ or Cs+) metal center. Journal of Organic Chemistry, 56 (1). pp. 225-235. ISSN 0022-3263

1990

Eerden, J. van and Harkema, S. and Feil, D. (1990) Molecular-dynamics simulation of crystalline 18-crown-6: thermal shortening of covalent bonds. Acta crystallographica Section B: Structural science, 46 . pp. 222-229. ISSN 0108-7681

1989

Eerden, J. van and Briels, W.J. and Harkema, S. and Feil, D. (1989) Potential of mean force by thermodynamic integration: molecular-dynamics simulation of decomplexation. Chemical Physics Letters, 164 (4). pp. 370-376. ISSN 0009-2614

Loon, J.-D. van and Arduini, A. and Verboom, W. and Ungaro, R. and Hummel, G.J. van and Harkema, S. and Reinhoudt, D.N. (1989) Selective functionalization of calix[4]arenes at the upper rim. Tetrahedron Letters, 30 (20). pp. 2681-2684. ISSN 0040-4039

Veggel, Frank C.J.M. van and Bos, Martinus and Harkema, Sybolt and Verboom, Willem and Reinhoudt, David N. (1989) Heteronucleare dreikernige Komplexe eines makrocyclischen Liganden mit zwei weichen (Cu2Ө, Ni2Ө) Metallzentren unter Cokomplexierung von Ba2Ө. Angewandte Chemie, 101 (6). pp. 800-802. ISSN 0044-8249

Veggel, Frank C.J.M. van and Bos, Martinus and Harkema, Sybolt and Verboom, Willem and Reinhoudt, David N. (1989) The Organization of Two Soft (Cu2Ө, Ni2Ө) Metal Centers in Heterotrinuclear Complexes of a Macrocyclic Ligand by Cocomplexation with Ba2Ө. Angewandte Chemie, International Edition in English, 28 (6). pp. 746-748. ISSN 0570-0833

1988

Uiterwijk, Jos W.H.M. and Hummel, Gerrit J. van and Harkema, Sybolt and Aarts, Veronika M.L.J. and Daasvatn, Kari and Geevers, Jan and Hertog Jr., Herman J. den and Reinhoudt, David N. (1988) Preparation and X-ray structures of complexes of 18-membered crown ethers with polyfunctional guests: Urea and (O-alkyliso)uronium salts. Journal of inclusion phenomena, 6 (1). pp. 79-100. ISSN 0167-7861

Waal, B.W. van de and Harkema, S. (1988) Equilibrium distributions of repulsive particles in a sphere. American Journal of Physics, 56 (7). pp. 583-584. ISSN 0002-9505

1987

Aarts, Veronika M.L.J. and Geevers, Jan and Reinhoudt, David N. and Lengton, Wim and Bos, Martinus and Uiterwijk, Jos W.H.M. and Harkema, Sybolt (1987) Liquid-liquid phase transfer of uronium salts via complexation by (di)benzo crown ethers : X-ray structure of the benzo-27-crown-9 uronium perchlorate (1:1) complex. Tetrahedron, 43 (3). pp. 617-624. ISSN 0040-4020

Eerden, J. van and Klooster, W.T. and Harkema, S. and Staveren, C.J. van and Reinhoudt, D.N. (1987) Structure of 2,6-pyrido-18-crown-6-guanidinium perchlorate-deuterochloroform. Acta Crystallographica Section C: Crystal structure communications, 43 (12). pp. 2453-2455. ISSN 0108-2701

Eerden, J. van and Roos, A. and Harkema, S. and Grootenhuis, P.D.J. and Reinhoudt, D.N. (1987) Structure of dibenzo-54-crown-18. Acta Crystallographica Section C: Crystal structure communications, 43 (4). pp. 799-801. ISSN 0108-2701

Skowronska-Ptasinska, Maria and Telleman, Pieter and Aarts, Veronika M.L.J. and Grootenhuis, Peter D.J. and Eerden, Johan van and Harkema, Sybolt and Reinhoudt, David N. (1987) Intraannular functionalization of macrocyclic polyethers via organolithium chemistry; x-ray structure of 2-sulfinyl-1,3-xylyl-15-crown-4. Tetrahedron Letters, 28 (17). pp. 1937-1939. ISSN 0040-4039

1986

Eerden, J. van and Harkema, S. and Sudhölter, E.J.R. (1986) A ternary complex of 1,3-xylyl-18-crown-5, tert-butylammonium perchlorate and dichloromethane. Acta Crystallographica Section C: Crystal structure communications, 42 (2). pp. 201-203. ISSN 0108-2701

1985

Elburg, P.A. van and Reinhoudt, D.N. and Harkema, S. and Hummel, G.J. van (1985) 1,4-diacetoxy-β-lactams. Reactions with nucleophiles. Tetrahedron Letters, 26 (23). pp. 2809-2812. ISSN 0040-4039

1984

Coppens, Philip and Dam, J. and Harkema, S. and Feil, D. (1984) Project on comparison of structural parameters and electron density maps of oxalic acid dihydrate. Acta Crystallographica Section A: Foundations of Crystallography, 40 . pp. 184-195. ISSN 0108-7673

Dijksman, W.C. and Verboom, W. and Reinhoudt, D.N. and Hale, C.G. and Harkema, S. and Hummel, G.J. van (1984) Novel applications of the “t-amino effect” in heterocyclic chemistry; synthesis of 1-alkylindoles. Tetrahedron Letters, 25 (19). pp. 2025-2028. ISSN 0040-4039

Harkema, S. and Brake, J.H.M. and Helmondt, R.B. (1984) Structure of Urea-Oxalic Acid (1/1), CH4N 2 O.C2H204, Determined by Neutron Diffraction. Acta Crystallographica Section C: Crystal structure communications, 40 (10). pp. 1733-1734. ISSN 0108-2701

1983

Dam, J. and Harkema, S. and Feil, D. (1983) The electron density of a-Oxalic acid dihydrate at 100 K by X-ray diffraction: a contribution to the IUCr Commission on Charge, Spin and Momentum Densities project on the accurate determination of electron densities. Acta Crystallographica Section B: Structural Science, 39 (6). pp. 760-768. ISSN 0108-7681

1982

Hummel, G.J. van and Harkema, S. and Kohn, F.E. and Feijen, J. (1982) Structure of 3,6-dimethyl-1,4-dioxane-2,5-dione [D-,D-(L-,L-)lactide]. Acta Crystallographica Section B: Structural crystallography and crystal chemistry, 38 (5). pp. 1679-1681. ISSN 0567-7408

Uiterwijk, J.W.H.M. and Harkema, S. and Hummel, G.J. van and Geevers, J. and Reinhoudt, D.N. (1982) S-tert-Butylthiouronium perchlorate-1,4,7,10,13,16-hexaoxacyclooctadecane (2:1). Acta Crystallographica Section B: Structural crystallography and crystal chemistry, 38 (6). pp. 1862-1864. ISSN 0567-7408

Uiterwijk, Jos W.H.M. and Harkema, Sybolt and Reinhoudt, David N. and Daasvatn, Kari and Hertog, Herman J. den and Geevers, Jan (1982) Komplexe von Kronenethern mit Uroniumsalzen: Herstellung und Kristallstruktur von [18]Krone-6-Uroniumnitrat (1/1) und Benzo[27]krone-9-Uroniumperchlorat (1/1). Angewandte Chemie, 94 (6). pp. 462-463. ISSN 0044-8249

Uiterwijk, Jos W.H.M. and Harkema, Sybolt and Reinhoudt, David N. and Daasvatn, Kari and Hertog Jr., Herman J. den and Geevers, Jan (1982) Complexes of Crown Ethers with Uronium Salts: Preparation and Crystal Structure of 18-Crown-6 Uronium Nitrate (1:1) and Benzo-27-Crown-9 Uronium Perchlorate (1:1). Angewandte Chemie, International Edition in English, 21 (S6). pp. 1100-1107. ISSN 0570-0833

Uiterwijk, Jos W.H.M. and Harkema, Sybolt and Reinhoudt, David N. and Daasvatn, Kari and Hertog Jr., Herman J. den and Geevers, Jan (1982) Complexes of Crown Ethers with Uronium Salts: Preparation and Crystal Structure of [18]Crown-6 Uronium Nitrate (1/1) and Benzo[27]crown-9 Uronium Perchlorate (1/1). Angewandte Chemie, International Edition in English, 21 (6). pp. 450-451. ISSN 0570-0833

1981

Verboom, W. and Visser, G.W. and Trompenaars, W.P. and Reinhoudt, D.N. and Harkema, S. and Hummel, G.J. van (1981) Synthesis of pyrrolizines by intramolecular capture of 1,4-dipolar intermediates in reactions of enamines with dimethyl acetylenedicarboxylate. Tetrahedron, 37 (20). pp. 3525-3533. ISSN 0040-4020

1980

Harkema, S. and Dam, J. and Hummel, G.J. van and Reuvers, A.J. (1980) A correction procedure for the errors in single-crystal intensities due to the inhomogeneity of the primary X-ray beam. Acta Crystallographica Section A: Crystal Physics, Diffraction, Theoretical and General Crystallography, 36 (3). pp. 433-435. ISSN 0567-7394

Harkema, S. and Hummel, G.J. van and Gaymans, R.J. (1980) N,N'-Tetramethylenedibenzamide (TMDB). Acta Crystallographica Section B: Structural crystallography and crystal chemistry, 36 (12). pp. 3182-3184. ISSN 0567-7408

Wit, A.D. de and Trompenaars, W.P. and Reinhoudt, D.N. and Harkema, S. and Hummel, G.J. van (1980) Reduction of nitro groups by ynamines; synthesis and x-ray crystal structure of n,n-diethyl-3,3a-dihydro-3-methylbenzofuro[3,2-c]isoxazole-3-carboxamide. Tetrahedron Letters, 21 (18). pp. 1779-1780. ISSN 0040-4039

1979

Harkema, S. and Brake, J.H.M. and Meutstege, H.J.G. (1979) The crystal structure and thermal expansion of two modifications of N-methylurea-oxalic acid (2:1). Acta Crystallographica Section B: Structural crystallography and crystal chemistry, 35 (9). pp. 2087-2093. ISSN 0567-7408

1978

Harkema, S. (1978) 3,5-Dichloro-4 H- 1,2,6-thiadiazin-4-one. Acta Crystallographica Section B: Structural crystallography and crystal chemistry, 34 (9). pp. 2927-2928. ISSN 0567-7408

1977

Gaymans, R.J. and Harkema, S. (1977) Melting behavior of aliphatic and aromatic diamides. Journal of Polymer Science: Polymer Chemistry Edition, 15 (3). pp. 587-590. ISSN 0360-6376

Harkema, S. and Gaymans, R.J. (1977) N,N'-(p-Phenylene)dibenzamide (PPDB). Acta Crystallographica Section B: Structural crystallography and crystal chemistry, 33 (11). pp. 3609-3611. ISSN 0567-7408

With, G. de and Harkema, S. (1977) Structure and charge distribution of oxamide as determined from high-order X-ray data. Acta Crystallographica Section B: Structural crystallography and crystal chemistry, 33 (8). pp. 2367-2372. ISSN 0567-7408

1976

Gaymans, R.J. and Tijssen, J. and Harkema, S. and Bantjes, A. (1976) Elastic modulus in the crystalline region of poly(p-phenylene terephthalamide). Polymer, 17 (6). pp. 517-518. ISSN 0032-3861

With, G. de and Harkema, S. and Feil, D. (1976) Crystal structure and charge distribution of pyrazine: effects of extinction, thermal diffuse scattering and series termination. Acta Crystallographica Section B: Structural crystallography and crystal chemistry, 32 (12). pp. 3178-3185. ISSN 0567-7408

1975

Harkema, S. and Graaf, W. van der (1975) The crystal structure of RbCoCl3.2H2O. Inorganic and Nuclear Chemistry Letters, 11 (12). pp. 813-816. ISSN 0020-1650

1974

Velde, G.M.H. van de and Harkema, S. and Gellings, P.J. (1974) The crystal and molecular structure of ammonium titanyl oxalate. Inorganica Chimica Acta, 11 . pp. 243-252. ISSN 0020-1693

1973

Enders-Beumer, A. and Harkema, S. (1973) The crystal structure of lithium formate monohydrate. Acta Crystallographica Section B: Structural crystallography and crystal chemistry, 29 (4). pp. 682-685. ISSN 0567-7408

Velde, G.M.H. van de and Harkema, S. and Gellings, P.J. (1973) Crystal structure of ammonium titanyl oxalate; tetrameric units of cyclo-tetra-di-μ-oxo-cis-dioxalato titanate (IV). Inorganic and Nuclear Chemistry Letters, 9 (11). pp. 1169-1173. ISSN 0020-1650

1972

Harkema, S. (1972) Semi-empirical calculations on the structure of the uronium ion. Journal of Molecular Structure, 12 (3). pp. 465-470. ISSN 0022-2860

Harkema, S. and Bats, J.W. and Weyenberg, A.M. and Feil, D. (1972) The crystal structure of urea oxalic acid (2:1). Acta Crystallographica Section B: Structural crystallography and crystal chemistry, 28 (5). pp. 1646-1648. ISSN 0567-7408

Huiszoon, C. and Waal, B.W. van de and Egmond, A.B. van and Harkema, S. (1972) The crystal and molecular structure of 2,3-diazanaphthalene. Acta Crystallographica Section B: Structural crystallography and crystal chemistry, 28 (11). pp. 3415-3419. ISSN 0567-7408

1969

Harkema, S. and Feil, D. (1969) The crystal structure of urea nitrate. Acta Crystallographica Section B: Structural crystallography and crystal chemistry, 25 (3). pp. 589-591. ISSN 0567-7408

This list was generated on Tue Jul 29 05:32:23 2014 CEST.