A Centrosymmetrical Di-thiolato-bridged Dinuclear Nickel(II) Compound; Bis-µ-S-(7-amino-2,4-dimethyl-5-azahept-4-ene-2-thiolato)dinickel(II) Perchlorate

Abstract

The title compound, formed by reaction of 4-mercapto-4-methylpentan-2-one with bis(ethane-1,2-diamine)nickel(II) perchlorate, has a centrosymmetrical dinuclear cation. Each singlet ground-state nickel(II) ion is in tetrahedrally twisted square-planar coordination by the primary amine and imine nitrogen atoms and the thiolato sulfur atom of one molecule 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 ligands forming a planar Ni₂S₂ bridging group {[Ni₂-µ-(adet)₂] (ClO₄)₂, C₁₆H₃₄C1₂N₄Ni₂O₈S₂, M_r 662·9, monoclinic, P2₁/c, a 8·267(1), b 9·952(1), c 16·234(2) Å, β 103·010(2)°, R₁ 0·033 for 2531 reflections}.