67989-90-6Relevant academic research and scientific papers
Metal-metal interactions in platinum(II)/gold(I) or platinum(II)/silver(I) salts containing planar cations and linear anions
Stork, Jay R.,Rios, Daniel,Pham, David,Bicocca, Vincent,Olmstead, Marilyn M.,Balch, Alan L.
, p. 3466 - 3472 (2005)
The salts [Pt{C(NHMe)2}4][Au(CN)2] 2, [Pt{C(NHMe)2}4][Ag2(CN) 3][Ag(CN)2], [Pt(en)2][Au(CN)2] 2, [Pt(en)2][Ag(CN)2]2, and [Pt(bipy)2][Au(CN)2]2 have been prepared by mixing solutions of salts containing the appropriate cation with solutions of K[Au(CN)2] or K[Ag(CN)2]. Because the platinum atom in the cation is sterically protected, the structures of [Pt{C(NHMe)2} 4][Au(CN)2]2 and [Pt{C(NHMe)2} 4][Ag2(CN)3][Ag(CN)2] reveal no close metal-metal interactions. Colorless crystals of [Pt(en) 2][Au(CN)2]2 and [Pt(en)2][Ag(CN) 2]2 are isostructural and involve extended chains of alternating cations and anions that run parallel to the crystallographic a axis, along with isolated anions. In the chains, the metal-metal separations are relatively short: Pt...Au, 3.1799(3) A; Pt...Ag, 3.1949(2) A. In [Pt(bipy)2][Au(CN)2]2, each cation has axial interactions with the anions through close Pt...Au contacts [3.1735(6) A]. In addition, the anions are weakly linked through Au...Au contacts of 3.5978(9) A. Unlike the previously reported Pt/Au complex [Pt(NH3)4][Au(CN)2]2·1. 5H2O, which is luminescent, none of the salts reported here luminesce.
