The redox aptitude of the dinitrido anion [Co10N2(CO)19]4- has been tested from both chemical and electrochemical points of view, together with its reactivity toward CO that induces disproportionation. In any case, through a remarkable overlapping of intermediate steps, the new anion [Co11N2(CO)21]3- (4) is eventually obtained. A detailed study of the pathways to 4 allowed the identification of three labile intermediates by their characteristic IR spectra as well as their electrochemical and paramagnetic properties. The unprecedented structure of trianion 4 has been studied in details in two different crystalline salts.

Electron transfer and CO addition to polynitrido cobalt carbonyl clusters: Parallel pathways for conversion of the [Co10N2(CO)(19)](4-) anion to the novel [Co11N2(CO)(21)](3-) anion

FUMAGALLI, ALESSANDRO;COSTA, MICHELA;CRISPU, ORNELLA;
2004-01-01

Abstract

The redox aptitude of the dinitrido anion [Co10N2(CO)19]4- has been tested from both chemical and electrochemical points of view, together with its reactivity toward CO that induces disproportionation. In any case, through a remarkable overlapping of intermediate steps, the new anion [Co11N2(CO)21]3- (4) is eventually obtained. A detailed study of the pathways to 4 allowed the identification of three labile intermediates by their characteristic IR spectra as well as their electrochemical and paramagnetic properties. The unprecedented structure of trianion 4 has been studied in details in two different crystalline salts.
carbonyl cluster; interstitial nitride; cobalt
Fumagalli, Alessandro; Ulivieri, Paola; Costa, Michela; Crispu, Ornella; DELLA PERGOLA, Roberto; FABRIZI DE BIANI, Fabrizia; Laschi, Franco; Zanello, Piero; Macchi, Piero; Sironi, Angelo
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11383/1491855
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