Crystal structures of the gold NHC complex bis(4-bromo-1,3-diethylimidazol-2-ylidene)gold(I) iodide and its 1:1 adduct with <i>trans</i>-bis(4-bromo-1,3-diethyl-imidazol-2-ylidene)diiodidogold(III) iodide
Acta crystallographica. Section E, Crystallographic communications