Study of nmr and ft - ir spectra of bis substituted cyclopentadienyl dichlorides of titanium and zirconium study of nmr and ft - ir spectra of bis substituted cyclopentadienyl dichlorides of titanium and zirconium 二r - r -环己烯基-甲基取代茂二氯钛和锆化合物的核磁共振和红外光谱研究
