The synthesis and structural characterization of the hexafluorophosphate salts of the substituted bis-amido mol. complexes [CoIII(h5-C5H4CONHC4H3N2)2]+ (1), [CoIII(h5-C5H4CONHCH2C5H4N)2]+ (2), [CoIII(h5-C5H4CON(C5H4N)2)2]+ (3), and of the amido-carboxyl complexes [CoIII(h5-C5H4CON(C5H4N)2)(h5-C5H4COOH)]+ (4), and [CoIII(h5-C5H4CONHC2N3(C5H4N)2)(h5-C5H4COOH)]+ (5) are reported. The pyridyl and pyrazine substituted amido ligands on the sandwich cores have been chosen because they allow both coordination to metal centers and participation in hydrogen bonding. The hydrogen bonding interactions established by the family of complexes in the solid state has been investigated. The utilization of complex 5 for the prepn. of the complex of complexes [Cd(NO3)2{CoIII(h5-C5H4CONHC2N3(C5H4N)(C5H4NH))(h5-C5H4COOH)}2]6+ (6) is reported as a first example of the potential of the substituted mono-and bis-amides as ligands. The isolation and structural characterization of the carbonyl chloride cation [CoIII(h5-C5H4COCl)2]+ (7) as its tetrachloro cobaltate anion salt is also described.

Novel organometallic building blocks for molecular crystal engineering. Part 4. Synthesis and characterization of mono- and bis-amido derivatives of [CoIII(h5-C5H4COOH)2]+ and their utilization as ligands.

BRAGA, DARIO;POLITO, MARCO;GIAFFREDA, STEFANO LUCA;GREPIONI, FABRIZIA
2005

Abstract

The synthesis and structural characterization of the hexafluorophosphate salts of the substituted bis-amido mol. complexes [CoIII(h5-C5H4CONHC4H3N2)2]+ (1), [CoIII(h5-C5H4CONHCH2C5H4N)2]+ (2), [CoIII(h5-C5H4CON(C5H4N)2)2]+ (3), and of the amido-carboxyl complexes [CoIII(h5-C5H4CON(C5H4N)2)(h5-C5H4COOH)]+ (4), and [CoIII(h5-C5H4CONHC2N3(C5H4N)2)(h5-C5H4COOH)]+ (5) are reported. The pyridyl and pyrazine substituted amido ligands on the sandwich cores have been chosen because they allow both coordination to metal centers and participation in hydrogen bonding. The hydrogen bonding interactions established by the family of complexes in the solid state has been investigated. The utilization of complex 5 for the prepn. of the complex of complexes [Cd(NO3)2{CoIII(h5-C5H4CONHC2N3(C5H4N)(C5H4NH))(h5-C5H4COOH)}2]6+ (6) is reported as a first example of the potential of the substituted mono-and bis-amides as ligands. The isolation and structural characterization of the carbonyl chloride cation [CoIII(h5-C5H4COCl)2]+ (7) as its tetrachloro cobaltate anion salt is also described.
D. Braga; M. Polito; S. L. Giaffreda; F. Grepioni,
File in questo prodotto:
Eventuali allegati, non sono esposti

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/11585/9157
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? 0
  • Scopus 17
  • ???jsp.display-item.citation.isi??? 16
social impact