title: [ReO(N2O2)X] complexes: "4 + 1"?
abstract: [ReO(ppme)X] (where ppme(2-) is 2,5-diazo-N,N'-dimethylhexyl-1,6-bis(phenylphosphinate), X = Br0.3Cl0.7) has been synthesized via a substitution reaction and structurally characterized. The coordination geometry is a distorted octahedron and one phosphinate coordinates cis and the other trans to the oxo O atom. This coordination mode is conserved in all [ReOppmeX] complexes synthesized in this study. [ReO(ppme)Cl] has been prepared by a reduction/complexation reaction from [NH4][ReO4]. [ReO(ppme)Cl] reacts with thiocyanate and benzene thiolate forming [ReO(ppme)X] (X = (-)NCS, (-)SC6H5), but the one-pot synthesis of the respective ternary thiolate complexes from perrhenate was not successful. The reduction/complexation reaction of a thiol, H2ppmeCl4, and perrhenate resulted in the formation of [H3ppme][ReO(SR)4], the reaction of which with [ReO(ppme)Cl] does not lead to [ReO(ppme)SR] in high yields.
authors.affiliation: Medicinal Inorganic Chemistry Group, Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, B.C. V6T 1Z1, Canada.
authors.forename: L
authors.initials: L
authors.lastname: Xu
authors.forename: M P
authors.initials: MP
authors.lastname: Lowe
authors.forename: S J
authors.initials: SJ
authors.lastname: Rettig
authors.forename: C
authors.initials: C
authors.lastname: Orvig
mesh_terms: D002614:Chelating Agents / Q000138:chemical synthesis / Q000737:chemistry*; D002851:Chromatography, High Pressure Liquid; D018360:Crystallography, X-Ray; D007202:Indicators and Reagents; D008024:Ligands; D008958:Models, Molecular; D009942:Organometallic Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D010721:Phosphinic Acids / Q000737:chemistry*; D011868:Radioisotopes; D019275:Radiopharmaceuticals / Q000737:chemistry*; D012211:Rhenium / Q000737:chemistry*; D013055:Spectrophotometry, Infrared
chemical_list: D002614:Chelating Agents; D007202:Indicators and Reagents; D008024:Ligands; D009942:Organometallic Compounds; D010721:Phosphinic Acids; D011868:Radioisotopes; D019275:Radiopharmaceuticals; D012211:Rhenium