Synthesis, crystal structure and magnetic properties of the triangulo-tricopper(ii) complex [Cu3(cpse)3(H2O)3]·8.5H2O
- 24 May 2002
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 13,p. 2648-2653
- https://doi.org/10.1039/b110915b
Abstract
The trinuclear copper(II) complex [Cu3(cpse)3(H2O)3]·8.5H2O has been obtained from mononuclear [Cu(Hcpse)2]·H2O {H2cpse = N-[2-hydroxy-1(S)-methyl-2(S)-phenylethyl]-N-methylglycine, threo isomer} and crystallographically characterised. The structure of the compound consists of three CuII atoms, each having distorted square-pyramidal geometry, linked by oxo-bridges to form an equilateral triangular array. The magnetic behaviour corresponds to an antiferromagnetically coupled triangular system, with J = −114.2 cm−1. The EPR spectra at different temperatures have been determined. The analogue [Cu(Hceph)2]·H2O (H2ceph = N-[2-hydroxy-1(S)-methyl-2(R)-phenylethyl]-N-methylglycine), prepared from the erythro isomer, was obtained and characterised by X-ray crystallography.Keywords
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