Supramolecular assembly of diplatinum species through weak Pt II···Pt II intermolecular interactions: A combined experimental and computational study

Alejandro Pérez Paz, Leonardo A. Espinosa Leal, Mohammad Reza Azani, Alejandro Guijarro, Pablo J. Sanz Miguel, Gonzalo Givaja, Oscar Castillo, Rubén Mas-Ballesté, Félix Zamora, Angel Rubio

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

The present study elucidates the factors that govern the spontaneous self-assembly of a family of dimetal [Pt 2L 4] (L=dithiocarboxylato ligand) complexes. Experimental data show that variables such as temperature, concentration, solvent and the nature of the ligand L have a critical effect on the reversible self-assembly of supramolecular [Pt 2L 4] n entities. In solution, new UV/Vis spectroscopic features emerge at low temperatures and/or high concentrations, which are attributed to the formation of oligomeric [Pt 2L 4] n species. The description of intermolecular Pt···Pt interactions, the main driving force for the association, was addressed from a computational perspective. The contributions from intermolecular Pt···S and S···S interactions to these supramolecular assemblies were found to be repulsive. Experimental UV/Vis data have been interpreted by means of computational spectroscopy.

Original languageEnglish
Pages (from-to)13787-13799
Number of pages13
JournalChemistry - A European Journal
Volume18
Issue number43
DOIs
Publication statusPublished - Oct 22 2012
Externally publishedYes

Keywords

  • computational chemistry
  • density functional calculations
  • metal-metal interactions
  • platinum
  • supramolecular chemistry

ASJC Scopus subject areas

  • Catalysis
  • Organic Chemistry

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