title: Analysis of NMR and FT-IR spectra on the bis(substituted cyclopentadienyl)dichlorides of titanium and zirconium.
abstract: The NMR and FT-IR spectra of 10 (etaC6H9CRR'-Cp)2MCl2 (M=Ti, Zr) were measured. Results indicate that the metal atom formed bond combination with the center of cyclopentadienyl. NMR spectra move to high field when electronegativity decreases. The electronegativity difference of Ti and Zr mainly influences their IR spectra at the far-infrared range. The characteristic vibrational frequencies of the compounds move to low wave number region with the lower electronegativity. The difference of substituents imposes little effect on the compounds' vibrational frequencies.
authors.affiliation: College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China. jbzhang@pku.edu.cn
authors.forename: Jianbo
authors.initials: J
authors.lastname: Zhang
authors.forename: Zhenqiang
authors.initials: Z
authors.lastname: Xu
authors.forename: Yueru
authors.initials: Y
authors.lastname: Zong
authors.forename: Zhenhua
authors.initials: Z
authors.lastname: Xu
authors.forename: Shoushan
authors.initials: S
authors.lastname: Chen
mesh_terms: D002712:Chlorides / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D014025:Titanium / Q000737:chemistry*; D015040:Zirconium / Q000737:chemistry*
chemical_list: D002712:Chlorides; D009942:Organometallic Compounds; D015040:Zirconium; D014025:Titanium