Titanocene(IV) and vanadocene(IV) complexes of dicyanomethanidobenzoate |
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| Authors: | Jan Honzí?ek Jaromír Vinklárek Lukáš St?i?ík Zdeňka Padělková |
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| Institution: | a Department of General and Inorganic Chemistry, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 532 10 Pardubice, Czech Republic
b Department of Inorganic Chemistry, Faculty of Natural Science, Charles University in Prague, Hlavova 2030, 128 40 Praha 2, Czech Republic |
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| Abstract: | The new titanocene and vanadocene complexes of the non-linear pseudohalides Cp2Ti(dcmb)2, Cp2VCl(dcmb), (η5-C5H4Me)2VCl(dcmb) and Cp2V(dcmb)2 were prepared by reaction of titanocene dichloride (Cp2TiCl2) and vanadocene dichlorides (Cp2VCl2, (η5-C5H4Me)2VCl2) with dicyanomethanidobenzoic acid (dcmbH, PhC(OH)C(CN)2). These reactions have proven that the dcmb ligand could be coordinated to the central metal by oxygen or nitrogen donor atoms. The bonding mode of the dcmb ligand reflects properties of the central metal. The strongly oxophilic titanium(IV) shows the bonding through oxygen atom while bonding through nitrogen atom was observed for less oxophilic vanadium(IV). The bonding fashion of the dcmb ligands was determined by spectroscopic methods. X-ray diffraction analysis was used for the structure determination of the compounds dcmbH·H2O, Cp2Ti(dcmb)2·CH2Cl2, (η5-C5H4Me)2VCl(dcmb) and Cp2V(OC(Ph)C(CN)C(OMe)NH)]dcmb]. |
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| Keywords: | Bent metallocene Titanocene Vanadocene Pseudohalide complexes X-ray structure |
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