The Rare Examples of Thiosemicarbazonato Chromium(III) Complexes: Crystal Structures of [Cr(Hsal 4-Metsc)2]ClCH3OH and [Cr(Hsal 4-Phtsc)2]Cl

Cindrić, Marina and Rubčić, Mirta (2012) The Rare Examples of Thiosemicarbazonato Chromium(III) Complexes: Crystal Structures of [Cr(Hsal 4-Metsc)2]ClCH3OH and [Cr(Hsal 4-Phtsc)2]Cl. Croatica Chemica Acta, 85 (4). pp. 505-513. ISSN 0011-1643

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Abstract

Reactions of salicylaldehyde 4-methylthiosemicarbazone (H2L1) and salicylaldehyde 4-phenylthiosemicarbazone (H2L2) with assorted chromium(III) precusors, [Cr(H2O)6]Cl3, [Cr(H2O)6](NO3)33H2O and [Cr(H2O)6](CH3COO)3, afforded new mononuclear chromium(III) complexes of the general formula [Cr(HL)2]X (X = Cl−, NO3− and CH3COO−). In all isolated compounds, Cr(III)ion is coordinated by the O,N,S atoms of the two singly deprotonated thiosemicarbazonato ligands, which are present in the thione form. All complexes have been characterized in the solid-state by means of chemical analyses, TG analysis and IR spectroscopy. The crystal and molecular structures of [Cr(Hsal 4-Metsc)2]ClCH3OH and [Cr(Hsal 4-Phtsc)2]Cl have been determined on the basis of single-crystal X-ray diffraction data. In accordance with kinetic inertness of neutral chromium(III) complexes all our attempts to prepare thiosemicarbazonato complexes via ligand-exchange reaction with [Cr(acac)3] have been unsuccessful.

Item Type: Article
Keywords: chromium(III) complexes of thiosemicarbazones
Date: 2012
Subjects: NATURAL SCIENCES > Chemistry
Divisions: Faculty of Science > Department of Chemistry
Publisher: Hrvatsko kemijsko društvo
Related URLs:
Depositing User: Branka Maravic
Date Deposited: 29 Apr 2014 15:59
Last Modified: 29 Apr 2014 15:59
URI: http://digre.pmf.unizg.hr/id/eprint/1000

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