A New Class of S-Bridged Hexanuclear Complexes with Aminoethanethiolate Ligands. Formation and Structural Characterization of [PdII2{NiII(aet)2}x{PdII(aet)2}4-x]Br4 (x = 0-4; aet = 2-Aminoethanethiolate)

Abstract

The reactions of [M(aet)z 2 with Pd II in water, followed by the addition of NaBr, gave a new class of S-bridged hexanuclear complexes [Pd 2 {M(aet) 2 } 4 ] Br 4 .6H 2 O (aet=aminoethanethiolate; M=Ni II (1), Pd II (2)). The same reaction of [Pd(aet) 2 ] with Ni II led to the formation of a mixture of S-bridged hexanuclcar complexes [Pd 2 {Ni(aet) 2 } x ePd(aet) 2 } 4-x ] Br 4 .6H 2 O (x= 0-4) (3), which implies that the didentate-N,S ligand aet readily transfers from the Pd II to the Ni II coordination sphere