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ansa-metallocene derivatives : XIV. Electrochemical reactions of unbridged and of tetramethylethanediyl-bridged chromocene carbonyl complexes

ansa-metallocene derivatives : XIV. Electrochemical reactions of unbridged and of tetramethylethanediyl-bridged chromocene carbonyl complexes

Type of Publication: Journal article
URI (citable link): http://nbn-resolving.de/urn:nbn:de:bsz:352-239752
Author: Raaij, Edith U. van; Mönkeberg, Sigrid; Kiesele, Herbert; Brintzinger, Hans-Herbert
Year of publication: 1988
Published in: Journal of Organometallic Chemistry ; 356 (1988), 3. - pp. 307-314. - ISSN 0022-328X
DOI (citable link): https://dx.doi.org/10.1016/0022-328X(88)83148-6
Summary:
(C5H5)2Cr(CO), formed from chromocene and CO gas in THF solution at 0°C, loses its CO ligand upon one-electron oxidation. No CO loss is observed, on the other hand, when the ansa-chromocene carbonyl complex (CH3)4C2(C5H4)2Cr(CO) is oxidised to its monocation. Formation of a dication (CH3)4C2(C5H4)2Cr(CO)2+, for which there is no unbridged analogue, is irreversible owing to its fast conversion to a solvent adduct; its reduction under CO, however, quantitatively regenerates the neutral carbonyl complex. One-electron reduction of either of the carbonyl complexes, (C5H5)2Cr(CO) or (CH3)4C2(C5H4)2Cr(CO), induces a fast, irreversible decay of the chromocene framework.
Subject (DDC): 540 Chemistry
Link to License: In Copyright

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RAAIJ, Edith U. van, Sigrid MÖNKEBERG, Herbert KIESELE, Hans-Herbert BRINTZINGER, 1988. ansa-metallocene derivatives : XIV. Electrochemical reactions of unbridged and of tetramethylethanediyl-bridged chromocene carbonyl complexes. In: Journal of Organometallic Chemistry. 356(3), pp. 307-314. ISSN 0022-328X. Available under: doi: 10.1016/0022-328X(88)83148-6

@article{Raaij1988ansam-23975, title={ansa-metallocene derivatives : XIV. Electrochemical reactions of unbridged and of tetramethylethanediyl-bridged chromocene carbonyl complexes}, year={1988}, doi={10.1016/0022-328X(88)83148-6}, number={3}, volume={356}, issn={0022-328X}, journal={Journal of Organometallic Chemistry}, pages={307--314}, author={Raaij, Edith U. van and Mönkeberg, Sigrid and Kiesele, Herbert and Brintzinger, Hans-Herbert} }

2013-07-09T13:02:36Z (C<sub>5</sub>H<sub>5</sub>)<sub>2</sub>Cr(CO), formed from chromocene and CO gas in THF solution at 0°C, loses its CO ligand upon one-electron oxidation. No CO loss is observed, on the other hand, when the ansa-chromocene carbonyl complex (CH<sub>3</sub>)<sub>4</sub>C<sub>2</sub>(C<sub>5</sub>H<sub>4</sub>)<sub>2</sub>Cr(CO) is oxidised to its monocation. Formation of a dication (CH<sub>3</sub>)<sub>4</sub>C<sub>2</sub>(C<sub>5</sub>H<sub>4</sub>)<sub>2</sub>Cr(CO)<sup>2+</sup>, for which there is no unbridged analogue, is irreversible owing to its fast conversion to a solvent adduct; its reduction under CO, however, quantitatively regenerates the neutral carbonyl complex. One-electron reduction of either of the carbonyl complexes, (C<sub>5</sub>H<sub>5</sub>)<sub>2</sub>Cr(CO) or (CH<sub>3</sub>)<sub>4</sub>C<sub>2</sub>(C<sub>5</sub>H<sub>4</sub>)<sub>2</sub>Cr(CO), induces a fast, irreversible decay of the chromocene framework. Mönkeberg, Sigrid 2013-07-09T13:02:36Z Raaij, Edith U. van Raaij, Edith U. van Kiesele, Herbert eng Mönkeberg, Sigrid ansa-metallocene derivatives : XIV. Electrochemical reactions of unbridged and of tetramethylethanediyl-bridged chromocene carbonyl complexes Brintzinger, Hans-Herbert 1988 terms-of-use Brintzinger, Hans-Herbert Kiesele, Herbert Journal of Organometallic Chemistry ; 356 (1988), 3. - S. 307-314

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