Synthesis and structural study of two decanuclear cobalt(II) cages incorporating pyridonates and benzoate-based carboxylates - 01/01/03
Cyril
Cadiou,
Madeleine
Helliwell,
Richard E.P.
Winpenny
*
*Corresponding author.
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Riassunto |
In this paper, we report the synthesis and the structures of two new decanuclear cobalt(II) cages including carboxylate and pyridonate ligands. The carboxylates are related to benzoic acid. Complex 1 has the formula [Co10(OH)6(chp)6(o-MeBz)7(n-C3H7OH)5][o-MeBz] where CHP = 2-chloro-6-pyridonate and o-MeBz = 2-methylbenzoate. The second cage, 2, has the formula [Co10(OH)6(mhp)6(p-tBuBz)8(Hmhp)2(CH3CN)2], where MHP = 2-methyl-6-pyridonate, Hmhp = 2-methyl-6-hydroxypyridine and p-tBuBz = 4-tertbutylbenzoate. The cobalt ions of 1 form a centred-tricapped-trigonal prism, whereas the metal core of 2 is based on a centred tetraicosahedron where five metal ions are missing. To cite this article: C. Cadiou et al., C. R. Chimie 6 (2003).
Riassunto |
Cet article reporte la synthèse et la structure de deux nouvelles cages décanucleaires du cobalt(II) comprenant des ligands carboxylates et pyridonates. Les carboxylates utilisés sont dérivés de l'acide benzoïque. Le complexe 1 a pour formule [Co10(OH)6(chp)6(o-MeBz)7(n-C3H7OH)5][o-MeBz], où CHP = 2-chloro-6-pyridonate et o-MeBz = 2-méthylbenzoate. La seconde cage, 2, a pour formule [Co10(OH)6(mhp)6(p-tBuBz)8(Hmhp)2(CH3CN)2], où MHP = 2-methyl-6-pyridonate, Hmhp = 2-methyl-6-hydroxypiridine et p-tBuBz = 4-tertbutylbenzoate. Les ions cobalt de 1 forment un prisme triangulaire centré ou trois Co(II) chapeautent les faces rectangulaires, tandis que le coeur métallique de 2 est basé sur un tétra-icosaèdre centré où cinq ions métalliques sont absents. Pour citer cet article : C. Cadiou et al., C. R. Chimie 6 (2003).
Mots clés : cage compounds ; carboxylates ; cobalt ; N-ligands.
Mots clés : carboxylates ; cobalt ; complexes cage ; ligands N.
Mappa
Vol 6 - N° 2
P. 241-247 - febbraio 2003 Ritorno al numero
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