Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/82281
Type: Artigo de periódico
Title: MOSSBAUER-SPECTROSCOPY OF (BENZYLIDENEACETONE)FE(CO)2L COMPLEXES WITH L=CO, PHOSPHITES AND PHOSPHINES - AN ANALYSIS OF LIGAND EFFECTS
Author: VICHI, EJS
STEIN, E
SAITOVITCH, EB
Abstract: The (benzylideneacetone)Fe(CO)2L complexes, with L = CO, PPh3, PMePh2, PMe2Ph, PEt3, PCy3, P(OPh)3, P(OMe)3, P(OEt)3 and P(O(i)Pr)3 have been studied by Mossbauer spectroscopy. The spectra are compatible with a distorted octahedral geometry with the iron atom at the center. The isomer shifts delta and quadrupole splittings DELTAE(q) are correlated with the Giering electronic parameter chi(d) of the phosphines and phosphites and with the C-13 NMR complex shifts DELTAC4 of coordinated benzylideneacetone. The results are discussed in terms of the stereoelectronic effects of the ligand L. Correlation between isomer shifts and quadrupole splittings indicates that d(pi)-L(pi)star back bonding is predominant in the complexes with L = CO and phosphites and negligible in the complexes with L = phosphines.
Subject: IRON
CARBONYL
MOSSBAUER SPECTROSCOPY
PHOSPHITE
PHOSPHINE
PI-BONDING
Country: Suíça
Editor: Elsevier Science Sa Lausanne
Rights: fechado
Identifier DOI: 10.1016/0022-328X(94)88121-9
Date Issue: 1994
Appears in Collections:Unicamp - Artigos e Outros Documentos

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