title: Ruthenium(II) dichloride complexes of chiral, tetradentate aminosulfoxide ligands: stereoisomerism and redox-induced linkage isomerism.
abstract: Ruthenium(II) dichloride complexes of two chiral tetradentate aminosulfoxide ligands, varying only in the N-N linker, were synthesized. With each ligand, two major isomers formed, and these were structurally assigned and characterized through a combination of NMR and UV-vis spectroscopies, X-ray crystallography, and density functional theory calculations. The cis-β geometric isomer was formed by each ligand, whereas the trans and cis-α geometric isomers were significant components for one ligand only. Cyclic voltammetry studies show that only the cis-β isomers undergo linkage isomerism upon oxidation to ruthenium(III), whereas the trans and cis-α isomers show simple reversible redox couples.
authors: Department of Chemistry, Jess and Mildred Fisher College of Science and Mathematics, Towson University, 8000 York Road, Towson, Maryland 21252, USA.
authors: Peter O
authors: PO
authors: Atolagbe
authors: Krista N
authors: KN
authors: Taylor
authors: Samantha E
authors: SE
authors: Wood
authors: Arnold L
authors: AL
authors: Rheingold
authors: Lenora K
authors: LK
authors: Harper
authors: Craig A
authors: CA
authors: Bayse
authors: Tim J
authors: TJ
authors: Brunker
mesh_terms: D002712:Chlorides / Q000737:chemistry*; D018360:Crystallography, X-Ray; D008024:Ligands; D008958:Models, Molecular; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D010084:Oxidation-Reduction; D011789:Quantum Theory; D012428:Ruthenium / Q000737:chemistry*; D013237:Stereoisomerism; D013438:Sulfhydryl Compounds / Q000737:chemistry*
chemical_list: D002712:Chlorides; D008024:Ligands; D009942:Organometallic Compounds; D013438:Sulfhydryl Compounds; D012428:Ruthenium