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Polyhedron

Polyhedron

IF: 2.39
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N,N-Dimethylethylenediamine in direct and direct template syntheses of Cu(II)/Cr(III) complexes

Published:12 May 2009 DOI: 10.1016/j.poly.2009.02.041
Vitalina M. Nikitina , Oksana V. Nesterova , Vladimir N. Kokozay , Viktoriya V. Dyakonenko , Oleg V. Shishkin , Julia Jezierska

Abstract

Four new heterometallic Cu(II)/Cr(III) complexes with N,N-dimethylethylenediamine (dmen) and its novel Schiff-base derivatives, N′-[(1Z)-3-amino-1,3-dimethylbutylidene]-N,N-dimethylethane-1,2-diamine (dmenac) and N′-((1Z)-3-{[2-(dimethylamino)ethyl]amino}-1,3-dimethylbutylidene)-N,N-dimethylethane-1,2-diamine (dmen2ac), have been easily prepared by self-assembly and characterized by spectroscopic methods and single crystal X-ray analysis. The structures of all the complexes are assisted by numerous hydrogen bonds that provide a web of interactions and mould the supramolecular architectures of the compounds. Variable-temperature (1.8–300?K) magnetic susceptibility measurements reveal Curie-Weiss paramagnetic behavior of all the compounds, supported by EPR studies.

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