Naslov
Synthesis, molecular structure, and characterization in solution of a new series of inorganic and organometallic Co(III) Schiff base complexes

Autori
Dreos, Renata ; Nardin, Giorgio ; Randaccio, Luciano ; Siega, Patrizia ; Tauzher, Giovani ; Vrdoljak, Visnja ;

Izvornik
Inorganica Chimica Acta (0020-1693) 349 (2003), 1; 239-248

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Cobalt complexes; Schiff base; Crystal structures; ESI MS spectrometry
(Schiff base; Crystal structures; ESI MS spectrometry)

Sažetak
A new series of inorganic and organometallic cobalt Schiff base complexes containing the tetradentate ligand tmsalen (4, 4', 7, 7', tetramethylsalen) have been synthesized. They have been characterized by H-1 NMR and UV-Vis spectroscopy and by ESI MS spectrometry, both in coordinating and non-coordinating solvents. Two inorganic complexes [Co(tmsalen)(L)(2)]ClO4, where L = py (2) and N-Melm (3), two dimeric organometallic derivatives [RCo(tmsalen)](2) (R = CH3 (4) and CH2CF3 (7)) and one organometallic penta-coordinated species (R = i-Pr (6)) have been structurally characterized. It is noteworthy that the formation of organometallic dimeric and penta-coordinated species occurs even if the synthesis is carried out in presence of py. Solution data confirm the strong tendency to the penta-coordination of the complexes containing the most electron-donating alkyl groups, which maintain penta-coordination even in methanol. (C) 2003 Elsevier Science B.V. All rights reserved.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA