title: Crystal structure of octa-μ3-selenido-(p-toluene-sulfonato-κO)penta-kis-(tri-ethyl-phosphane-κP)-octa-hedro-hexa-rhenium(III) p-toluene-sulfonate di-chloro-methane disolvate.
abstract: The title compound, [Re6Se8{O3SC6H4(CH3)}{P(C2H5)3}5](CH3C6H4SO3)·2CH2Cl2, contains the face-capped hexa-nuclear [Re6(μ3-Se)8](2+) cluster core. The [Re6Se8](2+) cluster core displays a non-crystallographic center of symmetry and is bonded through the Re(III) atoms to five tri-ethyl-phosphane ligands and one p-toluene-sulfonate ligand. One p-toluene-sulfonate counter-ion and two di-chloro-methane solvent mol-ecules are also present in the asymmetric unit. One of the ethyl chains of one triethylphos-phane ligand and one of the CH2Cl2 solvent molecules are disordered over two sets of sites (occupancy ratios 0.65:0.35 and 0.5:0.5, respectively). The Re-O(sulfon-ate) bond length of 2.123 (5) Å is similar to other Re-O bond lengths of hexa-nuclear rhenium chalcogenide clusters containing other O-donor ligands such as dimethyl sulfoxide (DMSO), di-methyl-formamide (DMF) and hydroxide.
authors.affiliation: Department of Chemistry, Campus Box 4160, Illinois State University, Normal, IL 61790-4160, USA.
authors.forename: Julia A
authors.initials: JA
authors.lastname: Edwards
authors.affiliation: Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada.
authors.forename: Robert
authors.initials: R
authors.lastname: McDonald
authors.affiliation: Department of Chemistry, Campus Box 4160, Illinois State University, Normal, IL 61790-4160, USA.
authors.forename: Lisa F
authors.initials: LF
authors.lastname: Szczepura
keywords: [Re6(μ3-Se)8]2+ cluster core; crystal structure; rhenium complex; tosyl­ate