title: [Infrared and Raman spectra studies on isomultinuclear organometallic carbyne compounds].
abstract: The infrared and Raman spectra of five isomultinuclear organometallic carbyne compounds were studied. The results show that the introduction of N atom from TMEDA or P atom from DPPE to W atom (both N and P are strong sigma-donor and weak pi-acceptor) will decrease the bonding intensity of W identical to C. The pressure tunning IR and Raman spectra of compound III indicate the presence of pressure-induced phase-transition near 20 kbar in it. There are two effects on the nu (W identical to C) of this compound with increasing pressure: the normal increasing the nu (W identical to C) wavenumber due to the shorting W identical to C bond and increasing the W-CO pi backbonding to decrease the nu (W identical to C) wavenumber.
authors.affiliation: State Key Laboratory of Rare Earth Material Chemistry and Applications, Department of Chemistry, Peking University, 100871 Beijing.
authors.forename: Z
authors.initials: Z
authors.lastname: Xu
authors.forename: A
authors.initials: A
authors.lastname: Mayr
mesh_terms: D002219:Carbamates / Q000737:chemistry*; D002244:Carbon; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000737:chemistry*; D011312:Pressure; D013055:Spectrophotometry, Infrared; D013059:Spectrum Analysis, Raman; D014414:Tungsten / Q000737:chemistry*
chemical_list: D002219:Carbamates; D009942:Organometallic Compounds; C004359:barban; D002244:Carbon; D014414:Tungsten