M. Pankowski et al., SYNTHESIS AND CRYSTAL-STRUCTURE OF [(ETA(5)-C5H5)(2)TI(ETA(2)-COR)B(C6H5)(3)CN], Journal of organometallic chemistry, 516(1-2), 1996, pp. 11-16
The synthesis, spectroscopic study and X-ray structure determination o
f eta(2) acylcyclopentadienyl complexes of titanium are reported. Thes
e complexes, showing an eta(2) acyl group, exhibit a zwitterionic char
acter because the anionic [BPh(3)CN] group is intimately bound to the
titanium atom.