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vol.49 número1Molecular Orbital Calculations of Hydrogen Bonding in Ammonia - Formic Acid System in the Presence of Electric FieldsCRYSTAL AND MOLECULAR STRUCTURE OF THE COMPLEX SALTS DIETHYLAMMONIUM AND MORPHOLINIUM OF 5-NITROPYRIDINE SULFONATE índice de autoresíndice de assuntospesquisa de artigos
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Journal of the Chilean Chemical Society

versão On-line ISSN 0717-9707

Resumo

LOPEZ B, Rosa  e  LOEB L., Bárbara. Tuning the Excited States in -fac--[Re(X2dppz)(CO)3(L)]: Intraligand, Charge Transfer or both?. J. Chil. Chem. Soc. [online]. 2004, vol.49, n.1, pp.83-87. ISSN 0717-9707.  http://dx.doi.org/10.4067/S0717-97072004000100014.

Excited state lifetime measurements - emission, emission lifetime and Resonance Raman - have been conducted on the series -fac--[Re(X2dppz)(CO)3(L)]0,+ (L = Cl-, 4-ethylpyridine (4-Etpy), 4,4´-bipyridine (4,4´-bpy)), with the X2dppz substituted dipyrido[3,2-a:2',3'-c]phenazine ligands (X = CH3 and Cl). The results are consistent with closely lying excited states, with pp* lowest, but MLCT contributing significantly to excited state lifetimes for the neutral complexes. -fac--[Re(Cl2dppz)(CO)3Cl] appears to undergo a crossover from lowest pp* to lowest MLCT through the glass to fluid transition

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