title: Structural and photophysical study on heterobimetallic complexes with d8-d10 interactions supported by carborane ligands: theoretical analysis of the emissive behaviour.
abstract: Heterobimetallic complexes of formula [M{(PPh2)2C2B9H10}(S2C2B10 H10)M'(PPh3)] (M=Pd, Pt; M'=Au, Ag, Cu) and [Ni{(PPh2)2C2B9H10}(S2C2B10H10)Au(PPh3)] were obtained from the reaction of [M{(PPh2)2C2B10H10}(S2C2B10H10)] (M=Pd, Pt) with [M'(PPh3)](+) (M'=Au, Ag, Cu) or by one-pot synthesis from [(SH2C2B10H10], (PPh2 )2C2B10H10, NiCl2 ⋅6 H2 O, and [Au(PPh3)](+). They display d(8)-d(10) intermetallic interactions and emit red light in the solid state at 77 K. Theoretical studies on [M{(PPh2)2C2B9H10}(S2C2B10H10)Au(PPh3)] (M=Pd, Pt, Ni) attribute the luminescence to ligand (thiolate, L)-to-"P2-M-S2" (ML') charge-transfer (LML'CT) transitions for M=Pt and to metal (M)-to-"P2-M-S2" (ML') charge-transfer (MML'CT) transitions for M=Ni, Pd.
authors.affiliation: Departamento de Química Inorgánica, Universidad de Zaragoza-CSIC, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Pedro Cerbuna 12, 50009 Zaragoza (Spain), Fax: (+34) 976761187. ocrespo@unizar.es.
authors.forename: Olga
authors.initials: O
authors.lastname: Crespo
authors.forename: M Concepción
authors.initials: MC
authors.lastname: Gimeno
authors.forename: Antonio
authors.initials: A
authors.lastname: Laguna
authors.forename: Olli
authors.initials: O
authors.lastname: Lehtonen
authors.forename: Isaura
authors.initials: I
authors.lastname: Ospino
authors.forename: Pekka
authors.initials: P
authors.lastname: Pyykkö
authors.forename: M Dolores
authors.initials: MD
authors.lastname: Villacampa
keywords: carboranes; heterometallic complexes; luminescence; metal-metal interactions; transition metals