Decay of an Ir(II) complex in aqueous solutions studied by pulse radiolysis. Effect of poly(styrenesulfonate) on the mechanism
Pulse radiolysis of aqueous solutions containing (Ir(bpy)/sub 2/(C/sup 3/,H(bpy))/sup 3+ 1,2/ or its basic form (Ir(III)/sup 3 +/ and Ir(III)/sup 2 +/, respectively) in the presence of 2-propanol produces the reduced Ir(II)/sup 2 +/ species (the reduction is at the bpy site). The decay of Ir(II)/sup 2 +/ is strongly enhanced by the presence of small concentrations of poly(styrenesulfonate)(PSS). Both intrapolymer and interpolymer bimolecular reactions of Ir(II)/sup 2 +/ are observed, followed by the formation of a hydride. Exchange of Ir(II)/sup 2 +/ between different polymer molecules is enhanced by ir(II)/sup 2 +/ in the bulk. The effects of (PSS), pulse intensity, and (Ir(III)/sup 2 +/) on the decay kinetics are reported and discussed. The overall effect of PSS on Ir(II)/sup 2 +/ is the catalyzed formation of hydrogen.
- Research Organization:
- Hebrew Univ. of Jerusalem, Israel
- OSTI ID:
- 6508528
- Journal Information:
- J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 91:11; ISSN JPCHA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400600* -- Radiation Chemistry
AZINES
BIPYRIDINES
CATALYTIC EFFECTS
CHEMICAL RADIATION EFFECTS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHEMISTRY
DATA
DECOMPOSITION
EXPERIMENTAL DATA
HETEROCYCLIC COMPOUNDS
INFORMATION
IRIDIUM COMPOUNDS
IRRADIATION
KINETICS
MATERIALS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC POLYMERS
ORGANIC SULFUR COMPOUNDS
PETROCHEMICALS
PETROLEUM PRODUCTS
PLASTICS
POLYMERS
POLYOLEFINS
POLYSTYRENE
POLYVINYLS
PULSED IRRADIATION
PYRIDINES
RADIATION CHEMISTRY
RADIATION EFFECTS
RADIOLYSIS
REACTION KINETICS
REFRACTORY METAL COMPOUNDS
SULFONATES
SYNTHETIC MATERIALS
TRANSITION ELEMENT COMPOUNDS