Novel Cr(III) dinuclear complexes supported by salicyloylhydrazono dithiolane and dithiane ligands: synthesis, stability, crystal structures and magnetic properties

Nicolas Clément; Clément Toussaint; Guillaume Rogez; Claudia Loose; Jens Kortus; Lydia Brelot; Sylvie Choua; Samuel Dagorne; Philippe Turek; Richard Welter

doi:10.1039/c001057j

Novel Cr(III) dinuclear complexes supported by salicyloylhydrazono dithiolane and dithiane ligands: synthesis, stability, crystal structures and magnetic properties

Dalton Trans. 2010 May 21;39(19):4579-85. doi: 10.1039/c001057j.

Authors

Nicolas Clément¹, Clément Toussaint, Guillaume Rogez, Claudia Loose, Jens Kortus, Lydia Brelot, Sylvie Choua, Samuel Dagorne, Philippe Turek, Richard Welter

Affiliation

¹ Laboratoire DECOMET, UMR-CNRS 7177, Université de Strasbourg, 4, rue Blaise Pascal, 67070, Strasbourg Cedex, France.

PMID: 20386789
DOI: 10.1039/c001057j

Abstract

We hereby report the synthesis, crystal structures and magnetic characterizations of three novel Cr(III) complexes: a mononuclear Cr(III)(HL((1)))₃ species along with two dinuclear μ-methoxo Cr(III)₂(μ-OMe)₂(HL)₄ (H₂L((1)): 2-salicyloylhydrazono-1,3-dithiolane; H₂L((2)): 2-salicyloylhydrazono-1,3-dithiane). EPR studies indicate that both dinuclear complexes (2a and 2b) are stable in solution (CHCl₃). Both Cr(III) dinuclear complexes exhibit a strong antiferromagnetic coupling. DFT calculations performed for complex 2a are in agreement with a strong antiferromagnetic exchange interaction in these new dinuclear Cr(III) complexes.