Alkynylselenolatoalkylidynes: [Mo(CSeCCR)(CO)2{HB(pzMe2)3}] (R = CMe3, SiMe3; pzMe2 = 3,5-Dimethylpyrazol-1-yl)

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• 作者：Lorraine M. Caldwell ; Anthony F. Hill ; A. David Rae ; Anthony C. Willis
• 刊名：Organometallics
• 出版年：2008
• 出版时间：February 11, 2008
• 年：2008
• 卷：27
• 期：3
• 页码：341 - 345
• 全文大小：499K
• 年卷期：v.27,no.3(February 11, 2008)
• ISSN：1520-6041

文摘

The reactions of [Mo(rc="http://pubs.acs.org/images/entities/tbd1.gif">CCl)(CO)₂{HB(pzMe₂)₃}] (pz = 3,5-dimethylpyrazol-1-yl) with lithium alkynylselenolates (LiSeCrc="http://pubs.acs.org/images/entities/tbd1.gif">CR; R = CMe₃, SiMe₃) provide the alkynylselenolatoalkylidyne complexes [Mo(rc="http://pubs.acs.org/images/entities/tbd1.gif">CSeCrc="http://pubs.acs.org/images/entities/tbd1.gif">CR)(CO)₂{HB(pzMe₂)₃}]. Cobalt carbonyl adds across the Crc="http://pubs.acs.org/images/entities/tbd1.gif">C rather than the Morc="http://pubs.acs.org/images/entities/tbd1.gif">C multiple bond to provide [Mo{rc="http://pubs.acs.org/images/entities/tbd1.gif">CSeCC(CMe₃)Co₂(CO)₆}(CO)₂{HB(pzMe₂)₃}], which upon reaction with dppm affords the complex [Mo{rc="http://pubs.acs.org/images/entities/tbd1.gif">CSeCC(CMe₃)Co₂(CO)₄(dppm)}(CO)₂{HB(pzMe₂)₃}] in addition to traces of the selenium extrusion product [Mo{rc="http://pubs.acs.org/images/entities/tbd1.gif">CCC(CMe₃)Co₂(CO)₄(dppm)}(CO)₂{HB(pzMe₂)₃}].