The redox aptitude of the dinitrido anion [Co<sub>10</sub>N <sub>2</sub>(CO)<sub>19</sub>]<sup>4-</sup> 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 [Co<sub>11</sub>N<sub>2</sub>(CO) <sub>21</sub>]<sup>3-</sup> (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.
Fumagalli, A., Ulivieri, P., Costa, M., Crispu, O., DELLA PERGOLA, R., Fabrizi de Biani, F., et al. (2004). 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. INORGANIC CHEMISTRY, 43(6), 2125-2131 [10.1021/ic035133a].
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
DELLA PERGOLA, ROBERTO;
2004
Abstract
The redox aptitude of the dinitrido anion [Co10N 2(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.
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