Synthesis and Characterization of Primary Aluminum Parent Amides and Phosphides
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- 作者：Christopher E. Melton ; Jonathan W. Dube ; Paul J. Ragogna ; James C. Fettinger ; Philip P. Power
- 刊名：Organometallics
- 出版年：2014
- 出版时间：January 13, 2014
- 年：2014
- 卷：33
- 期：1
- 页码：329-337
- 全文大小：450K
- ISSN：1520-6041
文摘
The synthesis and characterization of the sterically crowded primary alanes (AriPr4AlH2)2 (AriPr4 = C6H3-2,6(C6H3-2,6-iPr2)2) and (AriPr8AlH2)2 (AriPr8 = C6H-2,6(C6H2-2,4,6-iPr6)2-3,5-iPr2) are described. They, along with their previously reported less-hindered analogue (ArMe6AlH2)2 (ArMe6 = C6H3-2,6(C6H2-2,4,6-Me3)2), were reacted with ammonia to give the parent amido alanes {ArxAl(H)NH2}2 (Arx = ArMe6, 1; AriPr4, 2; AriPr8, 3), which are the first well-characterized hydride amido derivatives of aluminum and are relatively rare examples of parent aluminum amides. In contrast, the reaction of (ArMe6AlH2)2 with phosphine yielded the structurally unique Al/P cage species {(ArMe6Al)3(渭-PH2)3(渭-PH)PH2} (4) as the major product and a smaller amount of {(ArMe6Al)4(渭-PH2)4(渭-PH)} (5) as a minor product. All compounds were characterized by NMR and IR spectroscopy, while compounds 2鈥?b>5 were also characterized by X-ray crystallography.