Generation of Organoniobium(II) Radicals and Synthesis of Heterometallic Niobium-Mercury Compounds

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• 作者：B. Thiyagarajan ; Lucyna Michalczyk ; John C. Bollinger ; and Joseph W. Bruno
• 刊名：Organometallics
• 出版年：1996
• 出版时间：May 28, 1996
• 年：1996
• 卷：15
• 期：11
• 页码：2588 - 2590
• 全文大小：138K
• 年卷期：v.15,no.11(May 28, 1996)
• ISSN：1520-6041

文摘

Amalgam reduction of the Nb(III) compoundsCp'₂Nb(Cl)(L) (1, L = CO;2, L = PMe₃; 3, L =CN^tBu)gives rise to the electron-rich Nb(II) radicalsCp'₂Nb(L).In one case (L = CO) the intermediate radical wasobserved using ESR spectroscopy. The radicals undergoa facile reaction with elemental mercury to give theheterometallic compounds[Cp'₂Nb(L)]₂Hg, one ofwhich(L = PMe₃) was characterized crystallographically;sincethis process is reversible, the mercury adducts constituteconvenient sources of the niobium(II) radicals.