2,′2-Bipyridyl complexes of molybdenum

Abstract

2,2′-Bipyridyl complexes of molybdenum-(III) and -(IV) have been prepared using either a solution of ligand in a suitable solvent at room temperature or molten ligand above 100°. The quatervalent complex MoCl₄(bipy) has been prepared by reduction of the pentachloride and directly from the tetrachloride. The tervalent complexes, Mo₂X₆(bipy)₃(X = Cl, or Br), are probably [MoX₂(bipy)₂]⁺[MoX₄(bipy)]^– whereas the tervalent iodide complex is [Mo(bipy)₃]³⁺ 3 I^–. Structures have been assigned on the basis of analytical, spectroscopic, magnetic, and conductance data.