Co existence of isomeric binuclear tetrahedral Cu(I) complexes and their reaction with [NiCl2(PPh3)2]

Abstract

Reaction between 2-hydroxy-1-naphthaldehyde thiosemicarbazone and square planar dichloro bis triphenylphosphine Cu(II) resulted in two structurally different binuclear Cu(I) tetrahedral complexes which are co-crystallized together by exhibiting bonding isomerism. The reaction of co-crystallized complexes with [NiCl2(PPh3)2] led to C–S and Cu–S activation of coordinated ligand to form [Cu2(μ2-Cl2)(PPh3)3] and [Cu2(μ2-S2)(PPh3)3] respectively along with a square planar [Ni(nap-tsc)(PPh3)] (where, nap-tsc =2-hydroxy-1-naphthaldehyde thiosemicarbazone) and triphenylphosphine sulfide.

Keywords

• Binuclear copper(II) complex
• Square planar geometry
• Tetrahedral complex
• Co-crystallization
• Bonding isomerism