[Cr(C6H18N4)(SbS3)], a chromium complex containing an unusual bidentate SbS33- ligand

Vaqueiro, P. ORCID: https://orcid.org/0000-0001-7545-6262, Chippindale, A. M. ORCID: https://orcid.org/0000-0002-5918-8701 and Powell, A. V. (2003) [Cr(C6H18N4)(SbS3)], a chromium complex containing an unusual bidentate SbS33- ligand. Polyhedron, 22 (20). pp. 2839-2845. ISSN 0277-5387 doi: 10.1016/s0277-5387(03)00403-0

Abstract/Summary

A new chromium-antimony-sulfide, [Cr(C6H18N4)(SbS3)], has been synthesised under solvothermal conditions from CrCl3. 6H(2)O, Sb2S3 and S in the presence of triethylenetetramine at 433 K and characterised by single-crystal X-ray diffraction, thermogravimetry, elemental analysis and SQUID magnetometry. The structure of [Cr(C6H18N4)(SbS3)] consists of neutral mononuclear chromium-centred complexes, in which the Cr3+ is chelated by one tetradentate triethylenetetramine molecule and a bidentate SbS33- ligand, yielding distorted octahedral coordination. Intermolecular hydrogen bonds link individual molecules into layers within the ac plane. Within a layer, molecules occur in pairs with each member related by a centre of inversion. The Cr...Cr separation within a pair is approximately 6.5 Angstrom. Magnetic susceptibility data reveal Curie-Weiss behaviour with mu(eff) = 3.819(3)/mu(B) and a negligible Weiss constant, indicative of non-interacting Cr3+ ions. (C) 2003 Elsevier Science Ltd. All rights reserved.