title: Syntheses and structures of rhenium(IV) and rhenium(V) complexes with ethanedithiolato ligands.
abstract: A novel dimeric rhenium(IV) complex, [Re2(SCH2CH2S)4], and a monomeric methyloxorhenium(V) complex, [CH3ReO(SCH2CH2S)PPh3], were synthesized from methyloxorhenium(V) complexes and characterized crystallographically. The structure of [Re2(SCH2CH2S)4], the formation reaction of which showed surprising demethylation conceivably through the homolytic cleaveage of the rhenium-carbon bond, features distorted trigonal prismatic coordination of sulfurs around the metal center and a rhenium-rhenium triple bond. A revised structure, [Tc2(SCH2CH2S)4], is proposed for a related technetium complex, originally identified as [Tc2(SCH2CH2S)2(SCH=CHS)2] (Tisato et al. Inorg. Chem. 1993, 32, 2042). Additionally, a new compound, CH3Re(O)(SPh)2PPh3, was prepared.
authors.affiliation: Department of Chemistry, Iowa State University of Science and Technology, Ames, Iowa 50011, USA.
authors.forename: G
authors.initials: G
authors.lastname: Lente
authors.forename: X
authors.initials: X
authors.lastname: Shan
authors.forename: I A
authors.initials: IA
authors.lastname: Guzei
authors.forename: J H
authors.initials: JH
authors.lastname: Espenson