Syntheses and Some Reactions of Trimethylsilylated Dinitrogen Complexes of Tungsten and Molybdenum
| Autor: | Masaki Yamada, Keiko Komori, Seiya Sugiura, Yasushi Mizobe, Masanobu Hidai |
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| Rok vydání: | 1989 |
| Předmět: | |
| Zdroj: | Bulletin of the Chemical Society of Japan. 62:2953-2959 |
| ISSN: | 1348-0634 0009-2673 |
| DOI: | 10.1246/bcsj.62.2953 |
| Popis: | A series of new trimethylsilyldiazenido complexes [MX(NNSiMe3)(L)4] (M=Mo: X=I; M=W: X=CF3SO3; L=PMe2Ph or 1/2 dpe; dpe=Ph2PCH2CH2PPh2) and trimethylsilylhydrazido(2−) complexes [MX2(NNHSiMe3)(PMe2Ph)3] (M=Mo: X=I or Br; M=W: X=CF3SO3) and [MX(NNHSiMe3)(dpe)2]X (M=Mo: X=I; M=W: X=CF3SO3) were prepared by treatment of dinitrogen complexes cis-[M(N2)2(PMe2Ph)4] or trans-[M(N2)2(dpe)2] with Me3SiX in benzene. The trimethylsilyl groups on the terminal nitrogen atoms were easily replaced by hydrogen by the reaction with MeOH or H2O, affording, for example, diazenido and hydrazido(2−) complexes such as [WI(NNH)(dpe)2] and [WI2(NNH2)(PMe2Ph)3] from [WI(NNSiMe3)(dpe)2] and mer-[WI2(NNHSiMe3)(PMe2Ph)3], respectively. When reduced with excess Na in THF under N2, complexes trans-[MI(NNSiMe3)(PMe2Ph)4] (M=Mo or W) and mer-[WI2(NNHSiMe3)(PMe2Ph)3] gave (Me3Si)2NH and NH3 in substantial yields, accompanied by the regeneration of the parent dinitrogen complexes. Additional amount of NH3 was obtained by the hydrolysis of... |
| Databáze: | OpenAIRE |
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