X-ray structure and photoluminescence of copper(I) 2,6-bis(trifluoromethyl)benzoate

This report describes synthesis, X-ray crystallographic characterization, and photoluminescence of copper(I) 2,6-bis(trifluoromethyl)benzoate, [Cu(O2C(2,6-CF3)2C6H3)] (1). Complex 1 has a polymeric structure comprised of axially bound dinuclear [Cu2(O2C(2,6-CF3)2C6H3)2] units that is reminiscent of the well-known structure of copper(I) acetate, [Cu2(O2CMe)2] (2). However, a close comparison of two analogues revealed a non-planarity of 1D chains and their orthogonal disposition in the crystal structure of 1 versus parallel alignment of planar chains in 2. Complex 1 exhibits green photoluminescence at ca. 560 nm upon UV-radiation (λex = 350 nm) in the solid state.

Graphical abstractThis report describes the synthesis, X-ray crystallographic characterization, and photoluminescence of copper(I) 2,6-bis(trifluoromethyl)benzoate, [Cu(O2C(2,6-CF3)2C6H3)]. The title complex has a polymeric structure comprising of axially bound dinuclear [Cu2(O2C(2,6-CF3)2C6H3)2] units that is reminiscent of the well-known structure of copper(I) acetate, [Cu2(O2CMe)2]. However, a close comparison of the two analogues revealed a non-planarity of 1D chains and their orthogonal disposition in the crystal structure of copper(I) 2,6-bis(trifluoromethyl)benzoate versus parallel alignment of planar chains in copper(I) acetate.Figure optionsDownload full-size imageDownload as PowerPoint slide