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Characterization of the Luminescent, Homoleptic, Three-Coordinate, Water Soluble Au(I) Complex of Trisulfonated Triphenylphosphine (TPPTS) as the Cesium Salt, Cs8[Au(TPPTS)3].5.25 H2O

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Abstract

The homoleptic metal-TPPTS complex Cs8[Au(TPPTS)3].5.25 H2O has been characterized structurally. The x-ray data for the triclinic crystal, P-1, with cell constants a = 13.7003(4), b = 18.0001(6), c = 18.2817(2), α = 100.249(2), β = 99.593(2), ψ = 109.818(2) shows trigonal planar Au(I) centers coordinated by three TPPTS ligands having Au-P distances equal to 2.374(6), 2.394(5), and 2.417(5)A. The structure shows a complex network of bonding involving the Cs+ ions, the sulfate groups of the ligand, and H2O solvent molecules. The [Au(TPPTS)3]8− luminesces in the solid state and in aqueous solution with a broad emission atca 520 nm which is quenched by O2. and other small molecules. The forbidden singlet to triplet absorption atca 552 nm with ε≈ 0.8Lmol−1 cm−1 is also observed.

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Authors and Affiliations

  1. Laboratory for Molecular Structure and Bonding, Department of Chemistry, Texas A&M University, 77843-3255, College Station, TX, USA

    John P Fackler & Tiffany A. Grant

  2. Department of Chemistry, Virginia Polytechnic Institute and State University, 24061-0212, Blacksburg, VA, USA

    Brian E Hanson

  3. Department of Chemistry and Chemical Biology, Harvard University, 02138, Cambridge, MA, USA

    Richard J Staples

Authors
  1. John P Fackler
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  2. Tiffany A. Grant
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  3. Brian E Hanson
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  4. Richard J Staples
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Additional information

John P Fackler, Jr is Distinguished Professor of Chemistry at Texas A&M University and amongst his more than 280 publications there are over 100 papers relating to gold chemistry. Tiffany A Grant studied for her PhD with Fackler on the luminescent properties of gold(I) complexes and developed the crystallization of the water soluble phosphine complex reported here. Brian E Hanson is Professor of Chemistry at Virginia Polytechnic Institute and State University and is an expert in the use of biphasic systems for hydroformylation which involve sulfonated phosphine complexes of metal ions. Richard J Staples is staff crystallographer for the Chemistry Department at Harvard University and has structurally characterized over 50 gold compounds.

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Fackler, J.P., Grant, T.A., Hanson, B.E. et al. Characterization of the Luminescent, Homoleptic, Three-Coordinate, Water Soluble Au(I) Complex of Trisulfonated Triphenylphosphine (TPPTS) as the Cesium Salt, Cs8[Au(TPPTS)3].5.25 H2O. Gold Bull 32, 20–23 (1999). https://doi.org/10.1007/BF03214785

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  • DOI: https://doi.org/10.1007/BF03214785

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