66368-19-2Relevant academic research and scientific papers
Reduction of a coordinated acetonitrile ligand: Synthesis of an ethylimido complex of tungsten
Field, Leslie D.,Jones, Neale G.,Turner, Peter
, p. 2394 - 2398 (1998)
Treatment of the dinitrogen complex W(N2)2(dppe)2 (1; dppe = 1,2-bis(diphenylphosphino)-ethane) with trifluoromethanesulfonic acid yields the novel hydrazido complex [W(N2H2)-(OTf)(dppe)2]+[OTf] - (2; OTf = CF3SO3-). The triflato ligand is readily displaced by other ligands and coordinating solvents. The triflato complex 2 yields the complex [W(N2H2)-(NCCH3)(dppe)2] 2+ (5), when it is dissolved in acetonitrile, and 5 is readily deprotonated by a variety of bases to give the acetonitrile-dinitrogen complex W(N2)(NCCH3)(dppe)2 (3). Complex 3 is protonated at the β-carbon by tetrafluoroboric acid, resulting in the reduction of the coordinated nitrile to give the novel imido complex [WF(NCH2CH3)(dppe)2]+[BF 4]- (4). The X-ray crystal structure of the imido complex 4 reveals an effectively linear W-N-C bond (171.8°) in the imido ligand with a W-N bond length of 1.741(4) A?.
