title: Solvent effects on isomerization in a ruthenium sulfoxide complex.
abstract: We report the structure, electrochemistry, and isomerization kinetics for [Ru(bpy)(biq)(OSO)](PF(6)), where bpy is 2,2'-bipyridine, biq is 2,2'-biquinoline, and OSO is 2-methylsulfinylbenzoate. UV-visible and infrared data are suggestive of intramolecular S-->O and O-->S isomerization of the sulfoxide. Cyclic voltammetry reveals evidence for isomerization triggered by oxidation and reduction. Of particular note is the variation of the S-->O isomerization rate constant in different solvents. The rates were found to be 3.2 (+/-0.4) s(-1) in propylene carbonate, 0.80 (+/-0.03) s(-1) in acetonitrile, and 0.26 (+/-0.01) s(-1) in dichloromethane.
authors.affiliation: Department of Chemistry and Biochemistry, Nanoscale and Quantum Phenomena Institute, Ohio University, Athens, Ohio 45701, USA.
authors.forename: Tod A
authors.initials: TA
authors.lastname: Grusenmeyer
authors.forename: Beth Anne
authors.initials: BA
authors.lastname: McClure
authors.forename: Christopher J
authors.initials: CJ
authors.lastname: Ziegler
authors.forename: Jeffrey J
authors.initials: JJ
authors.lastname: Rack