Abstract
The reactions of potassium dichlorodicyanoaurate with n-propyl-, iso-butyl-, and n-heptyltriphenylphosphonium bromides in water followed by recrystallization from acetonitrile give dichlorodicyanoaurate complexes [Ph3P(n-Pr)][Au(CN)2Cl2] (I), [Ph3P(i‑Bu)][Au(CN)2Cl2] (II), and [Ph3P(n-Hp)][Au(CN)2Cl2] (III). Compounds I−III are identified by elemental analysis and IR spectroscopy. The structure of compound III is also proved by X-ray diffraction (XRD) (CIF file CCDC no. 2094701). According to the XRD data, complex III consists of n-heptyltriphenylphosphonium cations and crystallographically independent planar square dichlorodicyanoaurate anions of two types with similar geometric parameters. The steric organization of the crystal of complex III is formed by hydrogen bonds С–H∙∙∙N≡C (2.55–2.63 Å) and С–H∙∙∙Cl–Au (2.87 Å). In addition, the structure contains С–H∙∙∙π(Ph) contacts with the distances from the hydrogen atom to the benzene ring plane equal to 2.80 Å.
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Shevchenko, D.P., Khabina, A.E. Organyltriphenylphosphonium Dichlorodicyanoaurates [Ph3PR][Au(CN)2Cl2] (R = n-Pr, i-Bu, and n-Hp): Synthesis and Structures. Russ J Coord Chem 49, 521–525 (2023). https://doi.org/10.1134/S1070328423600328
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DOI: https://doi.org/10.1134/S1070328423600328