An interesting metallacarborane cage closure and dismantling reaction including the facile halogenation of a cluster carbon atom: Structure of [1,2-(η5-C5Me5)2-μ-1,2-H-closo-1,2,3-Rh2CB
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- 作者：Michael G.S. Londesborough ; Michael J. Carr and John D. Kennedy
- 关键词：Boranes ; Metallacarboranes ; Halogenation ; Single-crystal X-ray diffraction
- 刊名：Journal of Organometallic Chemistry
- 出版年：2005
- 出版时间：2005
- 年：2005
- 卷：690
- 期：21-22
- 页码：4967-4970
- 全文大小：145 K
文摘
Cage closure, together with the loss of two boron vertices, of [2,5-(η5-C5Me5)2-10-Me-μ-2,5-H-nido-2,5,1-Rh2CB6H8] (1) using an approximately molar equivalent of elemental iodine and excess triethylamine results in the formation of a new species [1,2-(η5-C5Me5)2-μ-1,2-H-closo-1,2,3-Rh2CB4H4-3-I] (2), which is characterized by multinuclear NMR spectroscopy, mass spectrometry, and single-crystal X-ray crystallography. The formation of compound 2 involves the elimination of a {B2CH3} moiety from 1 and an iodination of the single carbon vertex.