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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

Type of Publication: Journal article
URI (citable link): http://nbn-resolving.de/urn:nbn:de:bsz:352-239501
Author: Otto, Eckart E. H.; Brintzinger, Hans-Herbert
Year of publication: 1979
Published in: Journal of Organometallic Chemistry ; 170 (1979), 2. - pp. 209-216. - ISSN 0022-328X
DOI (citable link): https://dx.doi.org/10.1016/S0022-328X(00)81085-2
Summary:
The methylniobocene carbonyl (C5H5)2Nb(CH3)(CO) shows an unexpected lack of reactivity with respect to ligand migration. Whereas (C5H5)2V(CH3) has been reported to react with CO to yield the acetyl derivative (C5H5)2V(OC-CH3)(CO) immediately, we find that the niobocene analogue (C5H5)2Nb(CH3) reacts with CO only to regenerate (C5H5)2Nb(CH3)(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 (C5H5)2Nb(OCCH3).
Subject (DDC): 540 Chemistry
Link to License: Terms of use

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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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