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Organolanthanide chemistry is the field of chemistry that studies compounds with a lanthanide-to-carbon bond. Organolanthanide compounds are different from their organotransition metal analogues in the following ways: *They are far more air- and water-sensitive and are often pyrophoric. *Chemistry in the 0 oxidation state is far more limited. In fact, their electropositive nature makes their organometallic compounds more likely to be ionic. *They form no stable carbonyls at room temperature; organolanthanide carbonyl compounds have been observed only in argon matrices, and decompose when heated to 40 K. ==σ-Bonded Complexes== Metal-carbon σ bonds are found in alkyls of the lanthanide elements such as ()3− and Ln(). Methyllithium dissolved in THF reacts in stoichiometric ratio with LnCl3 (Ln = Y, La) to yield Ln(CH3)3 probably contaminated with LiCl. If a chelating agent (L-L), such as tetramethylethylenediamine (tmed or tmeda) or 1,2-dimethoxyethane (dme) is mixed with MCl3 and CH3Li in THF, this forms ()3() and ()3(). Certain powdered lanthanides react with diphenylmercury in THF to yield octahedral complexes: ::2Ln + 3Ph2Hg + 6THF → 2LnPh3(THF)3 + Hg (Ln = Ho, Er, Tm, Lu). 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Organolanthanide chemistry」の詳細全文を読む スポンサード リンク
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