Synthesis and X-ray structure of the new Mo diselenido complex with hydrotris(pyrazolyl)borate coligand [Et4N][TpMo(CO)(2)(eta(2)-Se-2)]

摘要

Reaction of the Mo(0) complex [Et4N][TpMo(CO)(3)] (Tp = hydrotris(pyrazol-1-yl)borate) with red Se in MeCN at 50 degreesC afforded the Mo(II) cliseleniclo complex [Et4N][TpMo(CO)(2)(eta(2)-Se-2)] (2), whose structure has been determined in detail by the single-crystal X-ray diffraction. By treatment with MeOSO2CF3 in MeCN, 2 was converted into the selenido-bridged dimolybdenum complex [{TpMo(CO)(2)}(2)(mu-Se)] with concomitant formation of MeSeSeMe. (C) 2004 Elsevier B.V. All rights reserved.