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Synthesis and Catalytic Performance of Gold Intercalated in the Walls of Mesoporous Silica
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Published on: July 9, 2015

Diselenolate- and ditellurolate-carborane gold complexes.

Olga Crespo1, M Concepción Gimeno, Adriana Ilie

  • 1Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Universidad de Zaragoza-CSIC, E-50009 Zaragoza, Spain. ocrespo@unizar.es

Dalton Transactions (Cambridge, England : 2003)
|June 11, 2013
PubMed
Summary

New gold complexes featuring selenolate and tellurolate carborane ligands were synthesized. These gold-carborane compounds exhibit diverse structures, including dinuclear and tetranuclear arrangements, expanding the chemistry of gold-carborane complexes.

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Area of Science:

  • Organometallic Chemistry
  • Inorganic Chemistry
  • Carborane Chemistry

Background:

  • Gold complexes with carborane ligands are of interest due to their unique electronic and structural properties.
  • Selenolate and tellurolate carboranes offer versatile coordination possibilities for metal centers.
  • Previous studies have explored dinuclear gold-carborane complexes with diphosphine ligands.

Purpose of the Study:

  • To synthesize novel gold complexes incorporating selenolate and tellurolate carborane ligands.
  • To investigate the structural diversity of these new gold-carborane compounds.
  • To explore the reactivity of gold precursors with these carborane anions.

Main Methods:

  • Synthesis of gold complexes via reactions of alkali metal selenolate/tellurolate carboranes with gold precursors.
  • Utilized gold(I) precursors like [AuClL] and gold(I) dimers [Au2Cl2(P∼P)].
  • Characterization of gold(III) species through reaction with bis(triphenylphosphano)iminium tetrachloroaurate(III).

Main Results:

  • Successfully synthesized dinuclear gold complexes of the type [Au2(μ-1,2-E2C2B10H10)L2] and [Au2(μ-1,2-E2C2B10H10)(P∼P)].
  • Prepared gold(III) species, PPN[Au(E2C2B10H10)2], using bis(triphenylphosphano)iminium tetrachloroaurate(III).
  • A tetranuclear complex, [Au4(μ-1,2-Se2C2B10H10)2(μ-dppc)2], was discovered, exhibiting a structure distinct from previously reported dinuclear arrangements.

Conclusions:

  • The study demonstrates the successful synthesis of diverse gold complexes with selenolate and tellurolate carborane ligands.
  • The findings reveal a novel tetranuclear gold-carborane structure, highlighting structural variability in these systems.
  • This work expands the scope of gold-carborane chemistry and provides insights into their structural possibilities.