Infrared and Raman Spectra Studies on Isomultinuclear Organometallic Carbyne Compounds

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 ??-donor and weak ??-acceptor) will decrease the bonding intensity of W equivalent 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 en the ??(W equivalent C) of this compound with increasing pressure:the normal increasing the ??(W equivalent C) wavenumber due to the shorting W equivalent C bond and increasing the W-CO ?? backbonding to decrease the ??(W equivalent C) wavenumber.EI057032