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Nucleophilic Reactions of Hydrazido(2–) Complexes of Molybdenum and Tungsten with Succinyl Dichloride and Phenyl Isocyanate

1981; Oxford University Press; Volume: 54; Issue: 6 Linguagem: Inglês

10.1246/bcsj.54.1773

ISSN

1348-0634

Autores

Kiyotaka Iwanami, Y. Mizobe, Tamotsu Takahashi, Teruyuki Kodama, Yasuzo Uchida, Masanobu Hidai,

Tópico(s)

Carbon dioxide utilization in catalysis

Resumo

Abstract Nucleophilic attack of the WNNH2 group in the hydrazido(2-) complex [WF(NNH2)(dpe)2][BF4] (dpe=Ph2PCH2CH2PPh2) on succinyl dichloride gives a novel ethanedioylhydrazido(2-) complex, [WF(NNCOCH2CH2CO)(dpe)2][BF4]. X-Ray structural analysis shows that the carbon, nitrogen, and oxygen atoms of the ethanedioylhydrazido(2-) ligand lie nearly in the same plane, indicating sp2 character of the nitrogen atom bearing the two carbonyl groups. Phenyl isocyanate also undergoes nucleophilic attack by the hydrazido(2-) complex [MBr(NNH2)(dpe)2]Br (M=Mo or W) to yield the phenylsemicarbazido(2-) type complex, [MBr(NNHCONHPh)(dpe)2Br. Treatment of the semicarbazido(2-) complex with triethylamine gives a new diazenido complex [MBr(NNCONHPh)(dpe)2].

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