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Copper(II) and cadmium(II) complexes of 2-benzylthio-4-formyl-1-p-methoxyphenylimidazole: crystal structure, spectral properties and thermal behaviour

✍ Scribed by Rafael López-Garzón; Miguel N. Moreno-Carretero; Miguel A. Salas-Peregrín; Juan M. Salas-Peregrín; René Faure

Publisher: Springer
Year: 1993
Tongue: English
Weight: 407 KB
Volume: 18
Category: Article
ISSN: 0340-4285
DOI: 10.1007/bf00136609

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✦ Synopsis

The coordinative capacity of 2-benzylthio-4-formyl-l-pmethoxyphenylimidazole (ALME) with several transition metal ions has been investigated and has led to only copper(II) and cadmium(II) complexes of general formula [MHC12(ALME)2I-nH20. These compounds were studied by spectral (i.r., u.v.-vis, n.i.r, and e.p.r.) and thermal methods (t.g., d.t.g, and d.s.c.) as well as magnetic susceptibility measurements.

The crystal structure of the copper complex has been solved, although a full refinement of the structure has not been possible as very few measured reflections were observed. The structure consists of discrete [CuClz-(ALME)2 ] units in which Cu(II) ion is 4 + 2 ClzN20 2 surrounded [Cu--CI(1), 2.28(1),~; Cu--CI(2), 2.29(1)~; Cu--N, 2.00(2)~; Cu--O, 2.71(2),~]. The ALME ligand acts as bidentate chelator through the N(3) imidazolic atom and the oxygen of the formyl group, the Cu--O interaction being very weak. Water molecules have not been localized.

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