12701-45-0Relevant academic research and scientific papers
Phosphine complexes of Ti(III) and Zr(III): Detection in solution by EPR/electrochemical methods
Samuel,Henique
, p. 183 - 187 (2007/10/03)
A comparative study by EPR is made on the electrolytic reduction of Cp2MX2, Cp2M(CH3)2, (Cp = η5-C5H5, cyclopentadienyl ligand; M = Ti, Zr; X = Cl, Br) and Ind2Ti(CH3)2 (Ind = η5-C9H7, indenyl ligand) in the presence of phosphines. In the case of the dihalides, the monohalo(phosphines) were characterized. In the case of the dimethyl compounds, Cp2M(CH3)(PMe3) and Ind2Ti(CH3)(PMe3) were identified at 230 K from their EPR spectra. At room temperature and for M = Ti, intramolecular rearrangement takes place to yield the presumably chelated dimethylphosphinomethyl compound Cp2Ti(III)CH2PMe2 while Ind2Ti(CH3)(PMe3) remains stable.
