Solution-state spin-equilibrium properties of the tris(2-(2-pyridyl)imidazole)iron(II) and Tris(2-(2-pyridyl)benzimidazole)iron(II) cations
Journal Article
·
· Inorg. Chem.; (United States)
Contrary to previous reports, the tris(2-(2-pyridyl)imidazole)iron(II) ((Fe((py)imH)/sub 3/)/sup 2 +/) and tris(2-(2-pyridyl)benzimidazole)iron(II) ((Fe((py)bimH)/sub 3/)/sup 2 +/) cations have been shown to be spin-equilibrium species in solution by variable-temperature magnetic and electronic spectral studies. Laser Raman temperature-jump kinetics has been used to directly measure the forward (k/sub 1/ = 1.1 x 10/sup 7/s/sup -1/) and reverse (k/sub -1/ = 1.0 x 10/sup 7/s/sup -1/) intersystem crossing rate constants for the dynamic spin-interconversion process in (Fe((py)imH)/sub 3/)/sup 2 +/. The results are compared to similar kinetic data available for other iron(II) spin-forbidden/conversion processes in bis(pyrazolylborate)iron(II) and (Fe(6-Mepy)/sub n/(py)/sub m/tren)/sup 2 +/. 2 tables, 3 figures, 36 references.
- Research Organization:
- Rice Univ., Houston, TX
- OSTI ID:
- 6758351
- Journal Information:
- Inorg. Chem.; (United States), Journal Name: Inorg. Chem.; (United States) Vol. 17:4; ISSN INOCA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
360104 -- Metals & Alloys-- Physical Properties
ANGULAR MOMENTUM
AZINES
AZOLES
BENZIMIDAZOLES
COMPARATIVE EVALUATIONS
COMPLEXES
DISPERSIONS
ELECTRON SPECTRA
EQUILIBRIUM
HETEROCYCLIC COMPOUNDS
HYDRATES
IMIDAZOLES
IRON COMPLEXES
LOW TEMPERATURE
MAGNETIC PROPERTIES
MEDIUM TEMPERATURE
MIXTURES
MOESSBAUER EFFECT
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANOMETALLIC COMPOUNDS
PARTICLE PROPERTIES
PHYSICAL PROPERTIES
PYRIDINES
SOLUTIONS
SPECTRA
SPIN
STRUCTURAL CHEMICAL ANALYSIS
SYNTHESIS
TEMPERATURE DEPENDENCE
THERMAL EQUILIBRIUM
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPLEXES
360102* -- Metals & Alloys-- Structure & Phase Studies
360104 -- Metals & Alloys-- Physical Properties
ANGULAR MOMENTUM
AZINES
AZOLES
BENZIMIDAZOLES
COMPARATIVE EVALUATIONS
COMPLEXES
DISPERSIONS
ELECTRON SPECTRA
EQUILIBRIUM
HETEROCYCLIC COMPOUNDS
HYDRATES
IMIDAZOLES
IRON COMPLEXES
LOW TEMPERATURE
MAGNETIC PROPERTIES
MEDIUM TEMPERATURE
MIXTURES
MOESSBAUER EFFECT
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANOMETALLIC COMPOUNDS
PARTICLE PROPERTIES
PHYSICAL PROPERTIES
PYRIDINES
SOLUTIONS
SPECTRA
SPIN
STRUCTURAL CHEMICAL ANALYSIS
SYNTHESIS
TEMPERATURE DEPENDENCE
THERMAL EQUILIBRIUM
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPLEXES