GROUND AND EXCITED-STATE SPECTROSCOPIC PROBES OF [(TMP)FE(IV)=O](- THE FIRST MAGNETIC CIRCULAR-DICHROISM STUDY OF A MODEL PEROXIDASE COMPOUND-I INTERMEDIATE() )

Authors
JONES R JAYARAJ K GOLD A KIRK ML
Citation
R. Jones et al., GROUND AND EXCITED-STATE SPECTROSCOPIC PROBES OF [(TMP)FE(IV)=O](- THE FIRST MAGNETIC CIRCULAR-DICHROISM STUDY OF A MODEL PEROXIDASE COMPOUND-I INTERMEDIATE() ), Inorganic chemistry, 37(12), 1998, pp. 2842-2843
Citations number
29
Categorie Soggetti
Chemistry Inorganic & Nuclear
Journal title
Inorganic chemistry → ACNP
ISSN journal
00201669
Volume
37
Issue
12
Year of publication
1998
Pages
2842 - 2843
Database
ISI
SICI code
0020-1669(1998)37:12<2842:GAESPO>2.0.ZU;2-5
Abstract
MCD spectroscopy has been used to probe the ground and excited state e lectronic structure of [(TMP)Fe(IV)=O](+), in order to obtain addition al insight into the electronic structure of enzymic compound I catalyt ic intermediates. Differences between the MCD of HRP I and the model p arallel differences in the exchange interaction. Variable-temperature MCD has determined the magnitude of the ground state zero-field splitt ing (D-3/2 = +-5.3 cm(-1)), which reflects a small energy separation ( triangle) between the Fe d(xy) and d(xz,yz) orbitals due to Fe dxz,yz --> porphyrin p pi back-bonding interactions.