Synthesis and Thermolysis of Aluminum Amidinates: A Ligand-Exchange Route for New Mixed-Ligand Systems
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- 作者：Allison L. Brazeau ; Zhaohui Wang ; Chris N. Rowley ; and Seá ; n T. Barry
- 刊名：Inorganic Chemistry
- 出版年：2006
- 出版时间：March 6, 2006
- 年：2006
- 卷：45
- 期：5
- 页码：2276 - 2281
- 全文大小：102K
- 年卷期：v.45,no.5(March 6, 2006)
- ISSN：1520-510X
文摘
A novel ligand-exchange route for the synthesis of amidinate-containing compounds of aluminum is explored.Syntheses of three new compounds, MeC(NiPr)2AlEt2 (4), EtC(NiPr)2AlMe2 (5), and (Me2NC(NiPr)2)2AlH (6), arepresented. These mixed-ligand compounds are difficult to make in high yields by the more traditional routes ofcarbodiimide insertion or salt metathesis. The thermal reactivities of these compounds and their parent homolepticcompounds [MeC(NiPr)2]3Al (1), [Me2NC(NiPr)2]3Al (2), and [EtC(NiPr)2]3Al (3) are explored in detail and analyzedwith respect to their utility as potential atomic-layer-deposition precursors for aluminum-containing films. The majormechanism of thermal decomposition is found to be carbodiimide deinsertion to form aluminum alkyls or amides.Because of their thermal characteristics, both compounds 3 and 5 hold promise for use as precursors.