title: Cycloaurated triphenylphosphine-sulfide and -selenide.
abstract: The first examples of cycloaurated phosphine sulfides and triphenylphosphine selenide have been synthesised; these complexes are fairly rare examples of gold(iii) complexes with potentially reducing sulfur- and selenium-donor ligands. The cycloaurated complex (AuCl(2)(2-C(6)H(4)P(S)Ph(2)) was synthesised in good yield by transmetallation of the organomercury precursor Hg(2-C(6)H(4)P(S)Ph(2))(2) with Me(4)N[AuCl(4)]. A route to the chloro-mercury analogue ClHg(2-C(6)H(4)P(S)Ph(2)) was developed by reaction of the cyclomanganated triphenylphosphine sulfide (CO)(4)Mn(2-C(6)H(4)P(S)Ph(2)) with HgCl(2); this mercury substrate was also used in the synthesis of AuCl(2)(2-C(6)H(4)P(S)Ph(2)). The cycloaurated triphenylphosphine selenide complex AuCl(2)(2-C(6)H(4)P(Se)Ph(2)) was synthesised by an analogous methodology using the new phosphine selenide Hg(2-C(6)H(4)P(Se)Ph(2))(2) [prepared from Hg(2-C(6)H(4)PPh(2))(2) and elemental Se under sonication]. The phosphonamidic analogue AuCl(2)(2-C(6)H(4)P(S)(NEt(2))(2)) has also been synthesised from PhP(S)(NEt(2))(2)via lithiation and mercuration. X-Ray crystal structures of several compounds are reported, and show the presence of puckered ring systems.
authors.affiliation: Department of Chemistry, University of Waikato, Private Bag 3105, Hamilton, New Zealand.
authors.forename: Kelly J
authors.initials: KJ
authors.lastname: Kilpin
authors.forename: William
authors.initials: W
authors.lastname: Henderson
authors.forename: Brian K
authors.initials: BK
authors.lastname: Nicholson
mesh_terms: D018360:Crystallography, X-Ray; D006046:Gold / Q000737:chemistry; D008628:Mercury / Q000737:chemistry; D008958:Models, Molecular; D008968:Molecular Conformation; D009942:Organometallic Compounds / Q000138:chemical synthesis* / Q000737:chemistry; D009943:Organophosphorus Compounds / Q000737:chemistry*; D012643:Selenium / Q000737:chemistry*; D013237:Stereoisomerism; D013440:Sulfides / Q000737:chemistry*
chemical_list: D009942:Organometallic Compounds; D009943:Organophosphorus Compounds; D013440:Sulfides; C061896:triphenylphosphine; D006046:Gold; D008628:Mercury; D012643:Selenium