Vibrational spectra and structure of dicyclopentadienylzinc
摘要:
The infrared (4000-50 cm(-1)) and Raman spectra of dicyclopentadienylzinc (Cp2Zn) in the solid state and in a tetrahydrofuran (THF) solution have been studied and discussed in connection with the structure of Cp2Zn. The slip-sandwich (eta(5)-C5H5)(eta(1)-C5H5)Zn molecular structure in solution is proposed based on of the analysis of the spectra in the regions of metal-ligand and out-of-plane rho(CH) bending vibrations. The assignment of vibrational frequencies is proposed. The comparison of the Raman spectra at 300 and 20 K shows that Cp2Zn crystals undergo a phase transition upon lowering the temperature. (C) 1998 Elsevier Science S.A.