Carbonyl and trifluorophosphine adducts of bis(2,4-dimethylpentadienyl)titanium and bis(2,4-dimethylpentadienyl)vanadium |
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Authors: | Richard D. Ernst Ju-Zheng Liu David R. Wilson |
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Affiliation: | Department of Chemistry, University of Utah, Salt Lake City, Utah 84112 U.S.A. |
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Abstract: | The syntheses of mono(carbonyl) and mono(trifluorophosphine) adducts of bis(2,4-dimethylpentadienyl)titanium and bis(2,4-dimethylpentadienyl)vanadium are described. Characterization has been achieved by routine spectral and analytical procedures. Detailed 1H and 13C NMR studies, as well as electron paramagnetic resonance and comparative infrared studies have been carried out in order to gain further understanding of the electronic nature of pentadienylmetal compounds, particularly compared to cyclopentadienylmetal compounds. Thus, infrared and EPR studies of V(C5H5)2(CO) and V(2,4-C7H11)2(CO) suggest that the withdrawal of electron density by the 2,4-dimethylpentadienyl ligand is considerably greater than that by the cyclopentadienyl ligand |
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