Crystal structures of the gold NHC complex bis-(4-bromo-1,3-di-ethyl-imidazol-2-yl-idene)gold(I) iodide and its 1:1 adduct with trans-bis-(4-bromo-1,3-diethyl-imidazol-2-yl-idene)di-iodido-gold(III) iodide

Büssing, Rolf; Ott, Ingo; Jones, Peter G

doi:10.1107/S2056989021011488

Article / Chapter Tue Nov 9 2021 CC BY 4.0

Published

Crystal structures of the gold NHC complex bis-(4-bromo-1,3-di-ethyl-imidazol-2-yl-idene)gold(I) iodide and its 1:1 adduct with trans-bis-(4-bromo-1,3-diethyl-imidazol-2-yl-idene)di-iodido-gold(III) iodide

Büssing, Rolf ; Ott, Ingo ; Jones, Peter G

The first title compound, [Au(C₇H₁₁BrN₂)₂]I, crystallizes in the space group P without imposed symmetry. The cations and anions are linked to form chains by Br⋯I⋯Br halogen-bond linkages. The second title compound, [Au(C₇H₁₁BrN₂)₂][AuI₂(C₇H₁₁BrN₂)₂]I₂, is an adduct of the first and its formally I₂-oxidized Au^III analogue. It also crystallizes in space group P , whereby both gold atoms occupy inversion centres. The extended structure is a reticular layer involving Br⋯I⋯Br and I⋯I⋯Au linkages.