NDLI: 1,4-Bis(2′-pyridylethynyl)benzene as a ligand in heteronuclear gold–thallium complexes. Influence of the ancillary ligands on their optical properties

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A theoretical study of the aromaticity in neutral and anionic borole compounds

1,4-Bis(2′-pyridylethynyl)benzene as a ligand in heteronuclear gold–thallium complexes. Influence of the ancillary ligands on their optical properties

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1,4-Bis(2′-pyridylethynyl)benzene as a ligand in heteronuclear gold–thallium complexes. Influence of the ancillary ligands on their optical properties

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Gimeno, M. Concepción López-de-luzuriaga, José M. Donamaría, Rocío Manso, Elena Monge, Miguel Arca, Massimiliano Lippolis, Vito Olmos, M. Elena
Description	Author Affiliation: Arca M ( Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 Bivio per Sestu, 09042 Monserrato, CA, Italy.)
Abstract	The reaction of 1,4-bis(2′-pyridylethynyl)benzene (L) with $[\{Au(C_{6}X_{5})_{2}\}Tl]_{n}$ affords new heterometallic $Au^{I}/Tl^{I}$ complexes with different stoichiometries, structural arrangements and optical properties depending on the halogens present in the aryl group. The chlorinated derivative $[\{Au(C_{6}Cl_{5})_{2}\}Tl(L)]_{n}$ (1) displays polymeric chains built thanks to unsupported Au⋯Tl interactions and bridging bidentate ligands between adjacent chains, while in the fluorinated species $[\{Au(C_{6}F_{5})_{2}\}_{2}Tl_{2}(L)_{2}]_{n}$ (2), also containing N-donor bridging ligands and Au⋯Tl contacts, polymerization occurs via $Tl⋯C_{aryl}$ non-bonding interactions between neighbouring molecules. The optical properties of 1 and 2 have been studied experimentally and theoretically, concluding that the luminescence of 1 in the solid state has its origin in the Au⋯Tl interactions, and that the $Tl⋯C_{aryl}$ interactions in 2 favour a non-radiative deactivation pathway that avoids luminescence. The strength of the non-bonding interactions present in 1 has also been theoretically studied at the HF and MP2 levels, revealing the metallophilic contact as the strongest one.
ISSN	14779226
Issue Number	15
Journal	Dalton Trans.
Volume Number	44
e-ISSN	13645447
Language	English
Publisher	Royal Society of Chemistry
Publisher Date	2015-04-21
Publisher Place	Great Britain (UK)
Access Restriction	Subscribed
Subject Keyword	Chemistry
Content Type	Text
Resource Type	Article
Subject	Inorganic Chemistry

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