High quantum yield molecular bromine photoelimination from mononuclear platinum(IV) complexes

Alice Raphael Karikachery, Han Baek Lee, Mehdi Masjedi, Andreas Ross, Morgan A. Moody, Xiaochen Cai, Megan Chui, Carl D. Hoff, Paul R. Sharp

Research output: Contribution to journalArticlepeer-review

30 Scopus citations

Abstract

Pt(IV) complexes trans-Pt(PEt3)2(R)(Br)3 (R = Br, aryl and polycyclic aromatic fragments) photoeliminate molecular bromine with quantum yields as high as 82%. Photoelimination occurs both in the solid state and in solution. Calorimetry measurements and DFT calculations (PMe3 analogs) indicate endothermic and endergonic photoeliminations with free energies from 2 to 22 kcal/mol of Br2. Solution trapping experiments with high concentrations of 2,3-dimethyl-2-butene suggest a radical-like excited state precursor to bromine elimination.

Original languageEnglish (US)
Pages (from-to)4113-4119
Number of pages7
JournalInorganic Chemistry
Volume52
Issue number7
DOIs
StatePublished - Apr 1 2013

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry

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