The anion [Co13N2(CO)(24)](3-) (1) has been obtained by pyrolisis at 100 degreesC of [Co14N3(CO)(26)](3-) (K salt) in buffered water solution (pH 11). The X-ray crystal structure ([NMe4]() salt) revealed that the metal cage of the anion is composed by a three-layered polyhedron with the two nitrides in trigonal prismatic environments. Anion 1, with 178 cluster valence electrons (CVE), is isostructural with the carbido species [Co13C2(CO)(24)](3-) (2, 176 CVE) and [Co13C2(CO)(24)](4-) (3, 177 CVE). In acetonitrile solution 1 undergoes two reversible one-electron additions. Comparison with the dicarbido tetraanion 3 evidences that the two clusters do not display isoelectronic redox paths. Actually, [Co13N2(CO)(24)](n-) undergoes the three-membered redox sequence (n = 3-5) from 178 to 180 CVE, whereas [Co13C2(CO)(24)](m-) undergoes the four-membered series (m = 3 -6), from 176 to 179 CVE. The different redox behaviour and the minor differences in the Co-Co bond distances point out that carbide and nitride have different role in stabilizing the two compounds

Fumagalli, A., Costa, M., DELLA PERGOLA, R., Zanello, P., de Biani, F., Macchi, P., et al. (2003). Synthesis, structural and electrochemical characterization of the nitrido-carbonyl cluster anion [Co13N2(CO)(24)](3-). The different redox propensity of the two isostructural families [CO13N2(CO)(24)](n-) and [CO13C2(CO)(24)](m-). INORGANICA CHIMICA ACTA, 350, 187-192 [10.1016/S0020-1693(02)01560-8].

Synthesis, structural and electrochemical characterization of the nitrido-carbonyl cluster anion [Co13N2(CO)(24)](3-). The different redox propensity of the two isostructural families [CO13N2(CO)(24)](n-) and [CO13C2(CO)(24)](m-)

DELLA PERGOLA, ROBERTO;
2003

Abstract

The anion [Co13N2(CO)(24)](3-) (1) has been obtained by pyrolisis at 100 degreesC of [Co14N3(CO)(26)](3-) (K salt) in buffered water solution (pH 11). The X-ray crystal structure ([NMe4]() salt) revealed that the metal cage of the anion is composed by a three-layered polyhedron with the two nitrides in trigonal prismatic environments. Anion 1, with 178 cluster valence electrons (CVE), is isostructural with the carbido species [Co13C2(CO)(24)](3-) (2, 176 CVE) and [Co13C2(CO)(24)](4-) (3, 177 CVE). In acetonitrile solution 1 undergoes two reversible one-electron additions. Comparison with the dicarbido tetraanion 3 evidences that the two clusters do not display isoelectronic redox paths. Actually, [Co13N2(CO)(24)](n-) undergoes the three-membered redox sequence (n = 3-5) from 178 to 180 CVE, whereas [Co13C2(CO)(24)](m-) undergoes the four-membered series (m = 3 -6), from 176 to 179 CVE. The different redox behaviour and the minor differences in the Co-Co bond distances point out that carbide and nitride have different role in stabilizing the two compounds
Articolo in rivista - Articolo scientifico
cobalt carbonyl cluster; interstitial nitride; electrochemistry; X-ray crystallography
English
lug-2003
350
187
192
none
Fumagalli, A., Costa, M., DELLA PERGOLA, R., Zanello, P., de Biani, F., Macchi, P., et al. (2003). Synthesis, structural and electrochemical characterization of the nitrido-carbonyl cluster anion [Co13N2(CO)(24)](3-). The different redox propensity of the two isostructural families [CO13N2(CO)(24)](n-) and [CO13C2(CO)(24)](m-). INORGANICA CHIMICA ACTA, 350, 187-192 [10.1016/S0020-1693(02)01560-8].
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/770
Citazioni
  • Scopus 12
  • ???jsp.display-item.citation.isi??? 12
Social impact