Gold complexes [Ph3PR]+[Au(CN)2I2-trans]−, where R = Et (1), CH2Ph (2), Ph (3), were synthesized by the reaction of potassium dicyanodiiodoaurate with tetraorganylphosphonium chlorides in acetonitrile and were structurally characterized. The phosphorus atoms in the cations are in a tetrahedral environment. In the centrosymmetric square [Au(CN)2I2]− anions of complexes 1–3, the Au—I distances have similar values (2.617(2), 2.623(2), and 2.611(2) Å, respectively); the largest bond length is observed in complex 2. The Au-C and C≡N bond lengths in complexes 1–3 are 1.993(5), 2.002(4), 2.003(19) Å and 1.130(6), 1.074(7), 1.12(2) Å, respectively. In the tetrahedral [Ph3PR]+ cations (C-P-C angles, 105.5(10)–111.2(7)°), the P-C distances vary in the range of 1.797(4)–1.816(4) Å. The structural organization of the crystals of compounds 1–3 is due mainly to weak N⋯H-C hydrogen bonds (2.44–2.74 Å) between hydrogen atoms of the cations and nitrogen atoms of the anions.

中文翻译：

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金配合物的合成与结构 [Ph3PR]+[Au(CN)2I2-trans]−, R = Et, CH2Ph, Ph

金配合物 [Ph3PR]+[Au(CN)2I2-trans]−，其中 R = Et (1)、CH2Ph (2)、Ph (3)，是通过二氰二碘金酸钾与四有机基氯化鏻在乙腈中的反应合成的，并且是结构特征。阳离子中的磷原子处于四面体环境中。在复合物 1-3 的中心对称正方形 [Au(CN)2I2]− 阴离子中，Au-I 距离具有相似的值（分别为 2.617(2)、2.623(2) 和 2.611(2) Å）；在配合物 2 中观察到最大的键长。配合物 1-3 中的 Au-C 和 C≡N 键长分别为 1.993(5)、2.002(4)、2.003(19) Å 和 1.130(6)、1.074(7) ), 1.12(2) Å。在四面体 [Ph3PR]+ 阳离子（CPC 角，105.5(10)–111.2(7)°）中，PC 距离在 1.797(4)–1.816(4) Å 范围内变化。