Original scientific paper

https://doi.org/10.5562/cca2153

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

Marina Cindrić orcid.org/0000-0003-3062-9902 ; Department of Chemistry, Faculty of Science, University of Zagreb, Horvatovac 102a, Zagreb 10000, Croatia
Mirta Rubčić orcid.org/0000-0001-7239-4772 ; Department of Chemistry, Faculty of Science, University of Zagreb, Horvatovac 102a, Zagreb 10000, Croatia

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.(
doi: 10.5562/cca2153)

Keywords

Chromium(III) complexes of thiosemicarbazones

Hrčak ID:

94449

URI

https://hrcak.srce.hr/94449

Publication date:

17.12.2012.

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