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Pendent Nucleophiles on Coordination Complexes: Hydrogen-Bond Donor and Acceptor Ability*

Jack K. Clegg A B , Jack M. Harrowfield C F , Yang Kim D , Young Hoon Lee D , Augustin Madalan C , Pierre Thuéry E and Arim Woo D
+ Author Affiliations
- Author Affiliations

A School of Chemistry, F11, The University of Sydney, NSW 2006, Australia.

B Department of Chemistry, University of Cambridge, Lensfield Rd, Cambridge, CB2 1EW, UK.

C Institut de Science et d’Ingénierie Supramoléculaires, Université de Strasbourg, 8, allée Gaspard Monge, 67083 Strasbourg, France.

D Department of Chemistry & Advanced Materials, Kosin University, 149-1, Dongsam-dong, Yeongdo-gu, Busan, 606-701, South Korea.

E CEA, IRAMIS, UMR 3299 CEA/CNRS, SIS2M, LCCEf, Bâtiment 125, 91191 Gif-sur-Yvette, France.

F Corresponding author. Email: harrowfield@unistra.fr

Australian Journal of Chemistry 65(7) 734-749 https://doi.org/10.1071/CH11447
Submitted: 24 November 2011  Accepted: 13 December 2011   Published: 16 February 2012

Abstract

Analysis of the crystal structures of a variety of transition metal complexes in which the ligands are hypodentate, thus providing pendent ammonio, amino, and/or hydroxy groups, has been conducted with the objective of defining the labile interactions of these pendent groups. In the case of pendent ammonio groups, not only do they appear to be good H-bond donors but they are frequently involved in contacts suggestive of hyperdenticity at N. For pendent amino and hydroxy groups, of particular interest in regard to their potential activity as nucleophiles, their H-bond acceptor ability frequently seems to be rather limited and it is unclear whether it can be related to either the nature or the charge on the bound metal cation.


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