European Journal of Chemistry

Synthesis, structural characterization, and crystal structure of bis(triphenylsulfonium)tetrachlorocuprate(II)

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COVERSEP2026
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Published: Sep 30, 2026
DOI: https://doi.org/10.5155/eurjchem.17.3.205-209.2760
Keywords:
Copper, Synthesis, Complex ion, Crystal structure, Triphenylsulfonium, X-ray crystallography
Section
Research Article
Issue
Vol. 17 No. 3 (2026): September 2026
Dates
Received 2025-12-29
Accepted 2026-06-19
Published 2026-09-30
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Grace Bennett
Department of Biochemistry, Chemistry and Physics, Faculty of the Center for Advanced Materials Science, Georgia Southern University, Savannah, Georgia, 31419, United States of America
https://orcid.org/0009-0004-6111-5351
Kennedy Gaines
Department of Biochemistry, Chemistry and Physics, Faculty of the Center for Advanced Materials Science, Georgia Southern University, Savannah, Georgia, 31419, United States of America
https://orcid.org/0009-0008-1413-9536
Morgan Barry
Department of Biochemistry, Chemistry and Physics, Faculty of the Center for Advanced Materials Science, Georgia Southern University, Savannah, Georgia, 31419, United States of America
https://orcid.org/0009-0009-0698-0832
Mark Gillican
Department of Biochemistry, Chemistry and Physics, Faculty of the Center for Advanced Materials Science, Georgia Southern University, Savannah, Georgia, 31419, United States of America
https://orcid.org/0009-0004-4398-5070
Clifford Padgett
Department of Biochemistry, Chemistry and Physics, Faculty of the Center for Advanced Materials Science, Georgia Southern University, Savannah, Georgia, 31419, United States of America
https://orcid.org/0000-0002-8373-1495
Will Lynch
Department of Biochemistry, Chemistry and Physics, Faculty of the Center for Advanced Materials Science, Georgia Southern University, Savannah, Georgia, 31419, United States of America
https://orcid.org/0000-0003-3494-8652

Abstract

The synthesis and crystal structure of bis(triphenylsulfonium)tetrachlorocuprate(II) are reported. Single-crystal X-ray diffraction analysis revealed that the compound crystallizes in the monoclinic crystal system, space group Pn, with unit-cell parameters a = 10.4463(1) Å, b = 10.0143(1) Å, c = 16.0734(1) Å, β = 99.090(1)°, V = 1660.36(3) Å3, and Z = 2. The asymmetric unit consists of two crystallographically independent triphenylsulfonium cations and one tetrachlorocuprate(II) anion. Both sulfonium centers adopt distorted trigonal-pyramidal geometries, with S-C bond lengths ranging from 1.779(4) to 1.792(4) Å and C-S-C bond angles between 103.6(2) and 105.40(19)°. The [CuCl4]2- anion exhibits a significantly distorted tetrahedral geometry characterized by Cu-Cl bond lengths of 2.2364(13)-2.2723(11) Å, Cl-Cu-Cl bond angles of 96.15(5)-139.70(5)°, and a τ4 value of 0.59, indicative of a flattened tetrahedral (seesaw-like) coordination environment. The observed structural parameters are consistent with those reported for related triphenylsulfonium and tetrachlorocuprate(II) salts, confirming the characteristic distortion of the [CuCl4]2- unit in this class of compounds.


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Bennett, G.; Gaines, K.; Barry, M.; Gillican, M.; Padgett, C.; Lynch, W. Synthesis, Structural Characterization, and Crystal Structure of bis(triphenylsulfonium)tetrachlorocuprate(II). Eur. J. Chem. 2026, 17, 205-209.

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Supporting Agencies

Georgia Southern University, Savannah, Georgia, 31419, United States of America, the National Science Foundation Major Research Instrumentation Program (Grant No. 2215812).
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