ISSN:
1572-8927
Keywords:
Tris(acetylacetonato)ruthenium(III) complexes
;
tris(acetylacetonato)iron(III)
;
resonance Raman spectroscopy
;
solvent effect
;
dielectric constant
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract The resonance Raman spectra of tris(acetylacetonatoiron(III)) and ruthenium(III) complexes in various solvents and in water-acetonitrile (W-AN) mixtures were measured. The resonance Raman spectra of both complexes indicated peaks near 460 and around 1580 cm−1. Thev(C-O) peak (around 1580 cm−1) is shifted to low frequency with an increase in the dielectric constant ɛT of the solvents, whereas thev(M-O) (M=Fe and Ru, near 460 cm−1) are constant, independent of ɛT. It implies that the C-O bond in the acac− ligand is lengthened by the polarizability effect of the solvents, while both the Fe-O and Ru-O bonds, which are located in the inside of the complexes, are not influenced by the solvents indicating that the interaction does not depend on the properties of individual solvent molecules but on those of the aggregate.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00973046
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