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Ligand exchange and ligand migration reactions involving dicyclopentadienylniobium(III) carbonyl derivatives

Ligand exchange and ligand migration reactions involving dicyclopentadienylniobium(III) carbonyl derivatives

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OTTO, Eckart E. H., Hans-Herbert BRINTZINGER, 1979. Ligand exchange and ligand migration reactions involving dicyclopentadienylniobium(III) carbonyl derivatives. In: Journal of Organometallic Chemistry. 170(2), pp. 209-216. ISSN 0022-328X. Available under: doi: 10.1016/S0022-328X(00)81085-2

@article{Otto1979Ligan-23950, title={Ligand exchange and ligand migration reactions involving dicyclopentadienylniobium(III) carbonyl derivatives}, year={1979}, doi={10.1016/S0022-328X(00)81085-2}, number={2}, volume={170}, issn={0022-328X}, journal={Journal of Organometallic Chemistry}, pages={209--216}, author={Otto, Eckart E. H. and Brintzinger, Hans-Herbert} }

Ligand exchange and ligand migration reactions involving dicyclopentadienylniobium(III) carbonyl derivatives eng 2013-07-30T07:10:50Z Otto, Eckart E. H. Journal of Organometallic Chemistry ; 170 (1979), 2. - S. 209-216 terms-of-use Brintzinger, Hans-Herbert The methylniobocene carbonyl (C<sub>5</sub>H<sub>5</sub>)<sub>2</sub>Nb(CH<sub>3</sub>)(CO) shows an unexpected lack of reactivity with respect to ligand migration. Whereas (C<sub>5</sub>H<sub>5</sub>)<sub>2</sub>V(CH<sub>3</sub>) has been reported to react with CO to yield the acetyl derivative (C<sub>5</sub>H<sub>5</sub>)<sub>2</sub>V(OC-CH<sub>3</sub>)(CO) immediately, we find that the niobocene analogue (C<sub>5</sub>H<sub>5</sub>)<sub>2</sub>Nb(CH<sub>3</sub>) reacts with CO only to regenerate (C<sub>5</sub>H<sub>5</sub>)<sub>2</sub>Nb(CH<sub>3</sub>)(CO), from which it was obtained by photolysis. This resistance of the methylniobocene carbonyl derivative towards ligand migration is interpreted in terms of the bonding properties of the acetyl intermediate (C<sub>5</sub>H<sub>5</sub>)<sub>2</sub>Nb(OCCH<sub>3</sub>). 2013-07-30T07:10:50Z Otto, Eckart E. H. Brintzinger, Hans-Herbert 1979

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