Dynamics of the (/sup 3/CT)Ru(bpy)/sup 2 +/ relaxation and electron-transfer processes under intense magnetic fields: evidence about the formation of adducts in the MV/sup 2 +/ quenching of (/sup 3/CT)Ru(bpy)/sub 3//sup 2 +/

Journal Article · Thu Apr 07 00:00:00 EDT 1988 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j100318a030· OSTI ID:5024711

Ferraudi, G; Argueello, G A

Intense magnetic fields (1-5 T) accelerate the rate of relaxation of (/sup 3/CT)Ru(bpy)/sub 3//sup 2 +/. The change of the rate constant with field intensity is linear for fields less intense than 4 T, a behavior inconsistent with an interaction mixing precursor and successor states. The rate constants of electron-transfer quenching of the excited state by Co(NH/sub 3/)/sub 5/Cl/sup 2 +/, Co(C/sub 2/O/sub 4/)/sub 3//sup 3 -/ experience also field-induced changes which can be associated with variations in the value of the electronic coupling matrix element. The quenching by methylviologen, investigated by flash photolysis, has shown the presence of an intermediate in a microsecond time domain, and the quenching rate constant experienced a significant magnetic-field-induced deceleration.

• Research Organization: Univ. of Notre Dame, IN (USA)
• OSTI ID: 5024711
• Journal Information: J. Phys. Chem.; (United States), Vol. 92:7
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
BIPYRIDINES
ELECTRON TRANSFER
PHOTOLYSIS
RELAXATION
RUTHENIUM COMPLEXES
ADDUCTS
CATIONS
DYE LASERS
EXCITED STATES
EXPERIMENTAL DATA
MAGNETIC FIELDS
NEODYMIUM LASERS
RADIATIONLESS DECAY
ZEEMAN EFFECT
AZINES
CHARGED PARTICLES
CHEMICAL REACTIONS
COMPLEXES
DATA
DE-EXCITATION
DECOMPOSITION
ENERGY LEVELS
ENERGY TRANSFER
ENERGY-LEVEL TRANSITIONS
HETEROCYCLIC COMPOUNDS
INFORMATION
IONS
LASERS
LIQUID LASERS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
PYRIDINES
SOLID STATE LASERS
TRANSITION ELEMENT COMPLEXES
400500* - Photochemistry