ChemInform Abstract: KUPFER(II)‐ UND SILBER(I)‐KOMPLEXE MIT HALOGENDIAZOAMINOBENZOLEN

Abstract

Die nach bekannten Methoden dargestellten Komplexe (I) und (II) werden IR‐, elektronenspektrometrisch und röntgenographisch charakterisiert.

Crystal structure of chlorido{1-(2,3-dimethyl-5-oxido-1-phenyl-1H-pyrazol-2-ium-4-yl-κO)-2-[3-methyl-5-oxo-1-phenyl-4,5-dihydro-1H-pyrazol-4-ylidene-κO]hydrazin-1-ido-κN1}copper(II) from laboratory X-ray powder data

“…Despite the fact that quite a number of metal complexes are known to exist, the determination of their crystal structures is rather problematic because of the high dispersity of azo-dyes. Only few of them have been structurally characterized (El-Hefnawy et al, 1992;Casas et al, 2007;Emeleus et al, 2001;Zaitseva et al, 1981;Kovalchukova et al, 2012;Bansse et al, 1997;Lalor et al, 1995). All of them show two similar coordination modes of the organic molecules: bidentate chelating for those with no donating atoms in the arylazo fragment or tridentate chelating for ligands with an extra coordinating group.…”