Studies on tris[Thiocyanato-μ-thiocyanato-copper(I)] tris(pyridyl)molybdenum(III) and Related Complexes

Abstract

Tetranuclear complexes of the type L₃Mo[M(SCN)₂]₃ [M = Cu(I) or Ag(I); L = pyridine, nicotinamide or triphenylphosphine] have been prepared and characterised by elemental analyses, molar conductance, magnetic moment, IR and electronic spectral studies. These studies reveal the presence of bridged and terminally S-bonded thiocyanates in the pyridine and nicotinamide complexes while bridged and terminally N-bonded thiocyanate groups were present in the triphenylphosphine complexes. Copper(I) and silver(I) are dicoordinated while molybdenum(III) is octahedral which has been supported by the HSAB principle.