title: Gold(I) complexes of bisphosphines with bis(azol-1-yl)methane backbone: structure of a rare dinuclear gold(I) complex [(Au2Cl){CH2(1,2-C3H2N2PPh2)2}3Cl].
abstract: Gold(i) complexes of bisphosphines assembled on the bis(azol-1-yl)methane platform viz.: bis(2-diphenylphosphinoimidazol-1-yl)methane (1), bis(5-diphenylphosphinopyrazol-1-yl)methane (2), bis(5-diphenylphosphino-1,2,4-triazol-1-yl)methane (3) have been described. Reactions of two equivalents of bisphosphines 1-3 with Au(SMe2)Cl produced dinuclear complexes [(AuCl)2(μ-P^P)] (4-6) with AuAu distances around 3.13 Å. Similar reactions of bisphosphines 1 and 3 in 1 : 1 molar ratios yielded chelate complexes 7 and 9, whereas the ligand 2 formed a rare tetracoordinated digold(i) complex [(Au2Cl){CH2(1,2-C3H2N2PPh2)2}3Cl] (8) along with both chelate and binuclear complexes. The complex 8 was also prepared in good yield in 1.5 : 1 reaction. The structures of complexes 4, 5 and 8 have been confirmed by single crystal analysis.
authors.affiliation: Phosphorus Laboratory, Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India. krishna@chem.iitb.ac.in msb_krishna@iitb.ac.in.
authors.forename: Sajad A
authors.initials: SA
authors.lastname: Bhat
authors.forename: Joel T
authors.initials: JT
authors.lastname: Mague
authors.forename: Maravanji S
authors.initials: MS
authors.lastname: Balakrishna
mesh_terms: D006046:Gold / Q000737:chemistry*; D008024:Ligands; D008697:Methane / Q000737:chemistry*; D008958:Models, Molecular; D008968:Molecular Conformation; D009942:Organometallic Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D010720:Phosphines / Q000737:chemistry*
chemical_list: D008024:Ligands; D009942:Organometallic Compounds; D010720:Phosphines; D006046:Gold; D008697:Methane