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Synthesis and structure of gold complexes [Ph3PR]+[Au(CN)2I2-trans]−, R = Et, CH2Ph, Ph

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Abstract

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.

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Authors and Affiliations

  1. South Ural State University (National Research University), 76 prosp. Lenina, 454080, Chelyabinsk, Russian Federation

    V. V. Sharutin, O. K. Sharutina, N. M. Tarasova & A. N. Efremov

  2. Ural Federal University named after the first President of Russia B. N. Yeltsin, 19 ul. Mira, 620002, Yekaterinburg, Russian Federation

    O. S. Eltsov

Authors
  1. V. V. Sharutin
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  2. O. K. Sharutina
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  3. N. M. Tarasova
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  4. A. N. Efremov
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  5. O. S. Eltsov
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Correspondence to A. N. Efremov.

Additional information

This work was financially supported by the Ministry of Education and Science of the Russian Federation within the framework of the state assignment (grant No. 4.6151.2017/8.9).

Russian Chemical Bulletin, International Edition, Vol. 69, No. 10, pp. 1892–1896, October, 2020

Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 10, pp. 1892–1896, October, 2020.

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Sharutin, V.V., Sharutina, O.K., Tarasova, N.M. et al. Synthesis and structure of gold complexes [Ph3PR]+[Au(CN)2I2-trans]−, R = Et, CH2Ph, Ph. Russ Chem Bull 69, 1892–1896 (2020). https://doi.org/10.1007/s11172-020-2975-4

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  • DOI: https://doi.org/10.1007/s11172-020-2975-4

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