FLETCHER, J; HOGARTH, G; TOCHER, DA; (1991) DIMOLYBDENUM OXO-IMIDO COMPLEXES - CRYSTAL-STRUCTURES OF [(MEC5H4)2MO2O2(MU-O)(MU-NPH)] AND [(MEC5H4)MOO(MU-NPH)]2. J ORGANOMET CHEM , 403 (3) 345 - 352.
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Oxidation of [(MeC5H4)Mo(CO)3]2 (1) by nitrobenzene in refluxing toluene affords three dimolybdenum oxo-imido complexes [(MeC5H4)2Mo2O2(mu-O)(mu-NPh)] (2), [(MeC5H4)MoO(mu-NPh)]2 (3), and [(MeC5H4)2Mo2O(NPh)(mu-O)(mu-NPh)] (4). Complexes 3 and 4 are isomers but do not interconvert. Complex 4 undergoes facile hydrolysis in hydrocarbon solvents giving 2 and aniline. The X-ray crystal structures of compounds 2 and 3 have been determined. Both structures display a trans-disposition of methylcyclopentadienyl ligands and terminal oxo ligands. The Mo2(mu-X)2 metallacore geometries are rigorously planar with the phenyl substituent(s) of the imido ligands being tilted slightly out of this plane. The Mo-Mo distances correspond to normal single bonds.
|Title:||DIMOLYBDENUM OXO-IMIDO COMPLEXES - CRYSTAL-STRUCTURES OF [(MEC5H4)2MO2O2(MU-O)(MU-NPH)] AND [(MEC5H4)MOO(MU-NPH)]2|
|UCL classification:||UCL > School of BEAMS > Faculty of Maths and Physical Sciences > Chemistry|
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