Issue 13, 2004
From the journal:

Dalton Transactions

Conformational and stereochemical flexibility in cadmium(ii) complexes of aza-thioether macrocycles

Mark W. Glenny,a   Leon G. A. van de Water,b   Willem L. Driessen,b   Jan Reedijk,b   Alexander J. Blake,a   Claire Wilsona  and  Martin Schröder*a  

* Corresponding authors

a School of Chemistry, University of Nottingham, University Park, UK

b Leiden Institute of Chemistry, Gorlaeus Laboratories, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands

Abstract

The synthesis and crystal structures of four CdII macrocyclic complexes containing mixed N-, O- and S-donors, [Cd(NO3)2([12]aneN2S2)] (1), [Cd(NO3)2([12]aneNS3)] (2), [Cd(NO3)2([15]aneNO2S2)] (3) and [Cd(NO3)([15]aneN2O2S)]NO3 (4), are presented. The metal ion is coordinated outside of the macrocyclic cavity in the complexes of the smaller macrocycles ([12]aneN2S2 and [12]aneNS3) while the flexibility of the larger macrocycles in 3 and 4 allows very different conformations to be adopted with a ‘butterfly’ geometry in 3 and a flattened geometry in 4. No correlation between the number of sulfur donors and Cd–S bond distance in these types of complexes is observed, although the number and binding mode of the nitrato ligands is determined by the conformation and binding mode of the macrocycle. The position of the nitrato ligand also influences, through steric conflicts with the macrocyclic donor atoms, the bond distances in both ligand systems.

Graphical abstract: Conformational and stereochemical flexibility in cadmium(ii) complexes of aza-thioether macrocycles

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Article information

DOI
https://doi.org/10.1039/B315726A
Article type
Paper
Submitted
03 Dec 2003
Accepted
17 Mar 2004
First published
18 May 2004

Dalton Trans., 2004, 1953-1959

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Conformational and stereochemical flexibility in cadmium(II) complexes of aza-thioether macrocycles

M. W. Glenny, L. G. A. van de Water, W. L. Driessen, J. Reedijk, A. J. Blake, C. Wilson and M. Schröder, Dalton Trans., 2004, 1953 DOI: 10.1039/B315726A

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