Crystal Structures and Properties of (Au(phen)((CN)0.92Br0.08)2)Br and [Au(phen)(CN)((CN)0.82Br0.18)].0.5trans-[Au(CN)2Br2].0.5Br.phen (phen = 1,10-phenantroline) obtained by disproportion of Five-co-ordinated Bromodicyano(1,10-phenantroline)gold(III). Two exemples of secondary Co-ordination and CN/Br disorder in square-planar gold(III) complexes.

full title:Crystal structures and properties of [Au(phen){(CN)0.92Br0.08}2]Br and [Au(phen)(CN){(CN)0.82Br 0.18}]·0.5trans-[Au(CN)2Br 2]·0.5Br·phen (phen = 1,10-phenanthroline) obtained by disproportionation of five-co-ordinate bromodicyano(1,10-phenanthroline)gold(III). Two examples of secondary co-ordination and CN/Br disorder in square-planar gold(III) complexes The disproportionation of neutral five-co-ordinate [Au(phen)(CN)2Br] (phen = 1,10-phenanthroline) in dimethylformamide (dmf) gives a conducting solution from which two charged species, [Au(phen){(CN)0.92Br0.08}2]Br (1) and [Au(phen)(CN){(CN)0.82Br 0.18}]·0.5trans-[Au(CN)2Br 2]·0.5Br·phen (2), have been separated and characterized by single-crystal X-ray analysis. Crystals of (1) are orthorhombic, space group Fmm2, Z = 4 with a = 6.515(1), b = 11.76(2), c = 18.666(2) Å. Crystals of (2) are triclinic, space group P1, Z = 2 with a = 9.149(3), b = 9.263(3), c = 15.485(5), α = 93.58(2), β = 105.10(2), γ = 95.49(2)°. The structure...