Monomeric Organogallium-Nitrogen Compounds. Chemistry of Et2GaNH[C6H2(2,4,6-t-Bu)3] with Decomposition to the Metallacycle {EtGaNH[C6H2
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- 作者：O. T. Beachley ; Jr. ; Daniel B. Rosenblum ; Melvyn Rowen Churchill ; David George Churchill ; and Lynn M. Krajkowski
- 刊名：Organometallics
- 出版年：1999
- 出版时间：June 21, 1999
- 年：1999
- 卷：18
- 期：13
- 页码：2543 - 2549
- 全文大小：134K
- 年卷期：v.18,no.13(June 21, 1999)
- ISSN：1520-6041
文摘
Two monomeric gallium-nitrogen compounds, Et2GaNH[C6H2(2,4,6-t-Bu)3] and EtGa{NH[C6H2(2,4,6-t-Bu)3]}2, have been prepared by metathetical reactions between either Et2GaClor EtGaCl2, as appropriate, and LiNH[C6H2(2,4,6-t-Bu)3] and have been characterized fully.Cryoscopic molecular weight studies demonstrated both compounds to be monomeric inbenzene solution, whereas an X-ray structural study of the latter identified a monomer.The compound Et2GaNH[C6H2(2,4,6-t-Bu)3] decomposes at room temperature to form a newmetallacyclic derivative m9901361a10002">{Etm990136100000">GaNH[C6H2(4,6-t-Bu)2(CMe2 CH2-2)]}2, GaEt3, and H2N[C6H2(2,4,6-t-Bu)3]. A 1H NMR spectral study and an X-ray structural study were used to elucidateits structure. The compound EtGa{NH[C6H2(2,4,6-t-Bu)3]}2 does not decompose to themetallacycle, but it reacts readily with GaEt3 to form Et2GaNH[C6H2(2,4,6-t-Bu)3].