Issue 41, 2019

Phosphine-substituted 1,2,3-triazoles as P,C- and P,N-ligands for photoluminescent coinage metal complexes

Abstract

A series of homo- and hetero-polynuclear coinage metal complexes based on a phosphine-substituted 1,2,3-triazole system is presented. Besides the P,N-ligand 1-benzyl-4-(diphenylphosphanyl)-1H-1,2,3-triazole (LPN), the P,C-donor ligand 1-benzyl-4-(diphenylphosphanyl)-3-methyl-1H-1,2,3-triazolium (LPCH+), featuring a potential mesoionic carbene moiety, was obtained by methylation of LPN. Starting from the monogold chloride complexes AuCl(LPN/LPC), the syntheses of a heterotrinuclear Au2Cu complex as well as a digold carbene complex are described. The multinuclear complexes show metallophilic interactions. Their photophysical properties were investigated by temperature-dependent photoluminescence (PL) measurements. In particular, the digold complex shows interesting PL properties including narrow exciton peaks arising in the excitation and emission spectra below 50 K. These might be related to the molecular ‘chains’ in the crystal structure of the digold complex, formed by phenyl ligand stacking.

Graphical abstract: Phosphine-substituted 1,2,3-triazoles as P,C- and P,N-ligands for photoluminescent coinage metal complexes

Supplementary files

Article information

Article type
Paper
Submitted
22 Marts 2019
Accepted
03 Maijs 2019
First published
14 Maijs 2019
This article is Open Access
Creative Commons BY-NC license

Dalton Trans., 2019,48, 15427-15434

Phosphine-substituted 1,2,3-triazoles as P,C- and P,N-ligands for photoluminescent coinage metal complexes

T. P. Seifert, S. Bestgen, T. J. Feuerstein, S. Lebedkin, F. Krämer, C. Fengler, M. T. Gamer, M. M. Kappes and P. W. Roesky, Dalton Trans., 2019, 48, 15427 DOI: 10.1039/C9DT01239G

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