title: Diselenolate- and ditellurolate-carborane gold complexes.
abstract: Gold complexes with selenolate and tellurolate carborane ligands [E2C2B10H10](2-) (E = Se, Te) have been synthesized by reaction of a freshly prepared solution of [1,2-(LiE)2C2B10H10] (E = Se, Te) with [AuClL] (L = PPh3, PPh2Me, PPh2py) in a 1 : 2 molar ratio or [Au2Cl2(P∼P)] [P∼P = dppf, 1,1'-bis(diphenylphosphano)ferrocene; dppe, 1,2-bis(diphenylphosphano)ethane; dppc, 1,2-bis(diphenylphosphano)-o-carborane] in a 1 : 1 molar ratio affording complexes [Au2(μ-1,2-E2C2B10H10)L2] or [Au2(μ-1,2-E2C2B10H10)(P∼P)], respectively. The gold(III) species PPN[Au(E2C2B10H10)2] (PPN = bis(triphenylphosphano)iminium) have been afforded by reaction of PPN[AuCl4] with [1,2-(LiE)2C2B10H10]. Complex [Au4(μ-1,2-Se2C2B10H10)2(μ-dppc)2] displays a tetranuclear structure, different from the dinuclear cyclic arrangement proposed for other complexes with diphosphanes of [Au2(μ-1,2-Se2C2B10H10)(P∼P)] stoichiometry.
authors.affiliation: Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Universidad de Zaragoza-CSIC, E-50009 Zaragoza, Spain. ocrespo@unizar.es
authors.forename: Olga
authors.initials: O
authors.lastname: Crespo
authors.forename: M Concepción
authors.initials: MC
authors.lastname: Gimeno
authors.forename: Adriana
authors.initials: A
authors.lastname: Ilie
authors.forename: Antonio
authors.initials: A
authors.lastname: Laguna
authors.forename: Isaura
authors.initials: I
authors.lastname: Ospino
authors.forename: Cristian
authors.initials: C
authors.lastname: Silvestru