Different emissive properties in dithiolate gold(i) complexes as a function of the presence of phenylene spacers

Monzittu, Francesco M. ; Fernández-Moreira, Vanesa (Universidad de Zaragoza) ; Lippolis, Vito ; Arca, Massimiliano ; Laguna, Antonio (Universidad de Zaragoza) ; Gimeno, M. Concepción (Universidad de Zaragoza)

Resumen: A family of dinuclear neutral thiolate gold complexes of the type RPh2PAuS(C6H4)nSAuPPh2R (n = 2, 3), RPh2PAuS(C6H4)S(C6H4)SAuPPh2R, RPh2PAuSCH2(C6H4)2CH2SAuPPh2R where R represents a pyridine or a phenylene ring, has been prepared and fully characterized. X-ray crystallographic studies showed the presence of aurophilic interactions for those species bearing two phenylene spacers between the gold metal centers, leading to infinite chains. The complexes are emissive in the solid state. Theoretical calculations together with the photophysical analysis seem to indicate that the main excitations involved in the emissive processes are due to a mixture of ILCT transition involving the thiolate and the conjugated phenylene rings, and LL′CT transitions comprising the thiolate and the pyridine or phenyl from the phosphine fragment which contrast with the typical gold thiolate emission, LMCT from the thiolate fragment to the metal center.

Idioma: Inglés

DOI: 10.1039/c3dt53530d

Año: 2014

Publicado en: Dalton Transactions 43, 16 (2014), 6212-6220
ISSN: 1477-9226

Factor impacto JCR: 4.197 (2014)

Categ. JCR: CHEMISTRY, INORGANIC & NUCLEAR rank: 6 / 45 = 0.133 (2014) - Q1 - T1

Financiación: info:eu-repo/grantAgreement/ES/DGA-FSE/E77
Financiación: info:eu-repo/grantAgreement/ES/MINECO-FEDER/CTQ2010-20500-C02-0

Tipo y forma: Artículo (PostPrint)

Área (Departamento): Área Química Inorgánica (Dpto. Química Inorgánica)
Área (Departamento): Proy. investigación HWA (Dpto. Química Inorgánica)