Pinkas, Jiri ; Chakraborty, Debashis ; Yang, Yu ; Murugavel, Ramaswamy ; Noltemeyer, Mathias ; Roesky, Herbert W. (1999) Reactions of trialkyl phosphates with trialkyls of aluminum and gallium: new route to alumino- and gallophosphate compounds via dealkylsilylation Organometallics, 18 (4). pp. 523-528. ISSN 0276-7333
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Official URL: http://pubs.acs.org/doi/abs/10.1021/om9806702
Related URL: http://dx.doi.org/10.1021/om9806702
Abstract
R3Al + OP(OSiMe3)3 → R3Al·OP(OSiMe3)3; 2R3Al·OP(OSiMe3)3 → 2RSiMe3 + [R2Al(μ2-O)2P(OSiMe3)2]2 Trialkyl phosphates OP(OR)3 (R = Me, Et, Ph, SiMe3) react with AlMe3, AlEt3, and GaMe3 in hydrocarbon solvents to form the adducts Me3Al.OP(OR)3 (R = Me (1), Et (2), Ph (3), SiMe3 (4)), Et3Al·OP(OR)3 (R = SiMe3 (5)), and Me3Ga·OP(OR)3 (R = Me (6), SiMe3 (7)). These products were characterized by 1H, 13C, 29Si, and 31P NMR, infrared (IR), and mass (MS) spectroscopies and elemental analysis. The trimethylsilyl ester adducts 4, 5, and 7 further undergo a thermally induced dealkylsilylation with the formation of cyclic alumino- and gallophosphate dimers, [R'2M(μ2-O)2P(OSiMe3)2]2 (R'2M = Me2Al (8), Et2Al (9), and Me2Ga (10)). The molecular structures of 8 and 9 were confirmed by X-ray crystallography.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Chemical Society. |
| ID Code: | 30388 |
| Deposited On: | 22 Dec 2010 10:51 |
| Last Modified: | 03 Mar 2011 09:37 |
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