Novel Cr-III dinuclear complexes supported by salicyloylhydrazono dithiolane and dithiane ligands: Synthesis, stability, crystal structures and magnetic properties

作者：Clement Nicolas; Toussaint Clement; Rogez Guillaume; Loose Claudia; Kortus Jens; Brelot Lydia; Choua Sylvie; Dagorne Samuel; Turek Philippe; Welter Richard^*

来源：Dalton Transactions, 2010, 39(19): 4579-4585.

DOI：10.1039/c001057j

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 mu-methoxo Cr-2(III)(mu-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.

• 出版日期2010