ansa-metallocene derivatives : XIV. Electrochemical reactions of unbridged and of tetramethylethanediyl-bridged chromocene carbonyl complexes
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(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.
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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. 1988, 356(3), pp. 307-314. ISSN 0022-328X. Available under: doi: 10.1016/0022-328X(88)83148-6BibTex
@article{Raaij1988ansam-23975, year={1988}, doi={10.1016/0022-328X(88)83148-6}, title={ansa-metallocene derivatives : XIV. Electrochemical reactions of unbridged and of tetramethylethanediyl-bridged chromocene carbonyl complexes}, 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} }
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