Issue 12, 2003

Molecular tectonics: structural and magnetic properties of a discrete copper binuclear complex and a 1-D coordination network

Abstract

Two new copper complexes 2 ([Cu2(pyS4)Cl4]·2CHCl3) and 3 ([Cu2(pyS4)Cl2]2+·2BF4) have been prepared, their crystal structures elucidated and their magnetic properties studied. Compound 2 is a discrete binuclear copper (II) complex. The geometry around the metal centre is a distorted square pyramid. Compound 3, in contrast, is an infinite coordination network formed upon mutual bridging of binuclear species through chloride atoms. Again, the geometry around each copper atom is closed to a square pyramid. The packing of the 1-D coordination networks generates channels which are occupied by BF4 anions. The magnetic behaviour observed for the 1-D network is comparable to the one corresponding to a discrete chloro-bridged copper (II) binuclear complex. In terms of magnetic coupling, whereas a strong ferromagnetic coupling is observed between the two spin bearers within the dimer (d = 3.467 Å) (J/kB = 337 K), a weak interdimer antiferromagnetic interaction is measured (zJ′/kB = −1.6 K).

Supplementary files

Article information

Article type
Paper
Submitted
18 Jul 2003
Accepted
10 Sep 2003
First published
24 Oct 2003

New J. Chem., 2003,27, 1801-1805

Molecular tectonics: structural and magnetic properties of a discrete copper binuclear complex and a 1-D coordination network

S. Ferlay, A. Jouaiti, M. Loï, M. W. Hosseini, A. De Cian and P. Turek, New J. Chem., 2003, 27, 1801 DOI: 10.1039/B308944B

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