Synthesis and photophysical properties of linear gold(I) complexes based on a CCC carbene.

ABSTRACT: The reaction between allenylpyridine (L1) and (Me₂S)AuCl resulted in the quantitative formation of the (Indolizy)gold chloride complex 1 (Indolizy = indolizin-2-ylidene). The reaction of 1 with carbazole in the presence of KO^tBu affords the corresponding (Indolizy)Au(Cz) complex 2. Both compounds show high air- and temperature stability. The crystal structure of 2 confirmed the linear co-planar geometry. Complex 1 shows an intense low energy absorption of mixed character in the UV-vis spectrum, ascribed to intraligand and (M + Hal)L charge transfer processes, and exhibits bright yellow phosphorescence with an excited state lifetime of 62.8 μs in the crystal and a luminescence quantum yield up to 65%. On the other hand, the carbazolate complex 2 in a polystyrene

SUBMITTER: Romanov AS 

PROVIDER: S-EPMC8631002 | biostudies-literature | 2021 Nov

REPOSITORIES: biostudies-literature