The structural characterization of the first mononuclear alkoxide cation: Isolation and X-ray study of [Mo(OMe)5(CH3CN)]Bi2Cl7
摘要:
Interaction of molybdenum oxomethoxide and bismuth chloride in toluene/acetonitrile media leads to the formation of an unusual ionic salt [MO(OMe)(5)(CH3CN)]Bi2Cl7 (1), providing the first example of an isolated mononuclear alkoxide cation, [Mo(OMe)(5)(CH3CN)](+) with rather uniform Mo-O(Me) bond lengths. The product can be isolated with moderate yields and only from solutions with considerable excess of the molybdenum reactant (Mo:Bi approximate to 2: 1) after refluxing of the reaction mixture, which indicates disproportionation of MoO(OMe)(4) in solution into MoO2(OMe)(2) and Mo(OMe)(6) as a crucial step in its formation. (C) 2005 Elsevier B.V. All rights reserved.