103407-77-8Relevant academic research and scientific papers
Dinitrogen Complexes of Tungsten with Bulky Phosphine Co-ligands. Preparation and Crystal Structures of 2(μ-N2)>, trans-*C4H8O, and 6-C6H5PPrn2)(N2)(PPrn2Ph)2> and their Reactions to give Hydrazine or Ammonia
Anderson, Stewart N.,Richards, Raymond L.,Hughes, David L.
, p. 245 - 252 (1986)
Reduction of WCl6 or (R=Et or Prn) with Mg in the presence of PR2Ph under N2 in tetrahydrofuran (thf) gives a mixture of dinitrogen complexes: 2(μ-N2)> (1), trans- (2), and 6-C6H5PR2)(N2)(PR2Ph)2> (3) which can be observed in the (15)N n.m.r. spectra of the reaction solutions and isolated in most cases in moderate yield.Compound (1a) (R=Et) is shown to be a dimer by X-ray analysis but the structure could be refined only with constraints on interatomic distances.Compounds (1) react with anhydrous HCl (thf, 20 deg C) to give hydrazine (0.2 mol/W atom) and dinitrogen (2 mol/W atom).Compound (2a) (R=Et) crystallizes as a thf solvate with W-N=1.986(6) and 1.994(6), N-N=1.146(7) and 1.139(7) Angstroem.Complex (2a) gives ammonia (1.8 mol/W atom) and N2 (1 mol/W atom) on treatment with H2SO4-MeOH.Compound (3b) (R=Prn) has W-N=1.980(8) and N-N=1.126(10) Angstroem and loses N2 quantitatively on treatment with anhydrous HCl in thf.
