A CENTROSYMMETRICAL DI-THIOLATO-BRIDGED DINUCLEAR NICKEL(II) COMPOUND- 4-DIMETHYL-5-AZAHEPT-4-ENE-2-THIOLATO)DINICKEL(II) PERCHLORATE

The title compound, formed by reaction of 4-mercapto-4-methylpentan-2- one with bis(ethane-1,2-diamine)nickel(II) perchlorate, has a centrosy mmetrical dinuclear cation. Each singlet ground-state nickel(II) ion i s in tetrahedrally twisted square-planar coordination by the primary a mine and imine nitrogen atoms and the thiolato sulfur atom of one mole cule of 7-amino-2,4-dimethyl-5-azahept-4-ene-2-thiolate (adet(-)), and the sulfur atom of another molecule, with the sulfur atoms of two lig ands forming a planar Ni2S2 bridging group ([Ni-2-mu-(adet)(2)] (ClO4) (2), C16H34C12N4Ni2O8S2, M-r 662.9, monoclinic, P2(1)/c, a 8.267(1), b 9.952(1), c 16.234(2) Angstrom, beta 103.010(2)degrees, R-1 0.033 for 2531 reflections).