Molecular recognition of carbonyl compounds by uranyl-salophen based neutral receptors driven by Van der Waals forces

Axel Castelli van, Valeria and Dalla Cort, Antonella and Mandolini, Luigi and Pinto, Valentina and Reinhoudt, David N. and Ribaudo, Fabrizio and Sanna, Cecilia and Schiaffino, Luca and Snellink-Ruel, Bianca H.M. (2002) Molecular recognition of carbonyl compounds by uranyl-salophen based neutral receptors driven by Van der Waals forces. Supramolecular Chemistry, 14 (2-3). pp. 211-219. ISSN 1061-0278

PDF
Restricted to UT campus only: Request a copy
853Kb

Abstract:	The complexation of the salophen-uranyl metallocleft 2 and of its half-cleft analogue 3 with enones and other carbonyl compounds was assessed in chloroform by UV-Vis titration and, occasionally, by FT-IR measurements. Complexes with receptors 2 and 3 are in all cases more stable than those with the control unsubstituted uranyl-salophen 1 , showing that in addition to the primary binding force provided by coordination of the carbonyl oxygen to the uranium, a significant driving force for complexation, typically in the range of 2-3 kcal/mol, results from van der Waals interactions of the guest with the aromatic walls. Replacement of the phenyl group in 3 with larger aromatic residues to give 4 and 5 , led to enhanced complex stabilities, due to more extended contact surfaces between host and guest.
Item Type:	Article
Copyright:	© 2002 Taylor & Francis
Research Group:	Supramolecular Chemistry and Technology (SMCT)
Link to this item:	http://purl.utwente.nl/publications/37947
Official URL:	http://dx.doi.org/10.1080/10610270290026112
Export this item as:	BibTeX EndNote HTML Citation Reference Manager

Show download statistics for this publication

Repository Staff Only: item control page

Metis ID: 206206