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 Hoff, Paul R. Sharp

Research output: Contribution to journal › Article

29 Citations (Scopus)

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

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Bromine
Quantum yield
bromine
Platinum
platinum
butenes
Calorimetry
Excited states
Discrete Fourier transforms
Free energy
elimination
heat measurement
trapping
free energy
fragments
analogs
solid state
excitation
Experiments
2,3-dimethyl-2-butene

ASJC Scopus subject areas

  • Inorganic Chemistry
  • Physical and Theoretical Chemistry

Cite this

Raphael Karikachery, A., Lee, H. B., Masjedi, M., Ross, A., Moody, M. A., Cai, X., ... Sharp, P. R. (2013). High quantum yield molecular bromine photoelimination from mononuclear platinum(IV) complexes. Inorganic Chemistry, 52(7), 4113-4119. https://doi.org/10.1021/ic4004998

High quantum yield molecular bromine photoelimination from mononuclear platinum(IV) complexes. / Raphael Karikachery, Alice; Lee, Han Baek; Masjedi, Mehdi; Ross, Andreas; Moody, Morgan A.; Cai, Xiaochen; Chui, Megan; Hoff, Carl; Sharp, Paul R.

In: Inorganic Chemistry, Vol. 52, No. 7, 01.04.2013, p. 4113-4119.

Research output: Contribution to journal › Article

Raphael Karikachery, A, Lee, HB, Masjedi, M, Ross, A, Moody, MA, Cai, X, Chui, M, Hoff, C & Sharp, PR 2013, 'High quantum yield molecular bromine photoelimination from mononuclear platinum(IV) complexes', Inorganic Chemistry, vol. 52, no. 7, pp. 4113-4119. https://doi.org/10.1021/ic4004998
Raphael Karikachery A, Lee HB, Masjedi M, Ross A, Moody MA, Cai X et al. High quantum yield molecular bromine photoelimination from mononuclear platinum(IV) complexes. Inorganic Chemistry. 2013 Apr 1;52(7):4113-4119. https://doi.org/10.1021/ic4004998
Raphael Karikachery, Alice ; Lee, Han Baek ; Masjedi, Mehdi ; Ross, Andreas ; Moody, Morgan A. ; Cai, Xiaochen ; Chui, Megan ; Hoff, Carl ; Sharp, Paul R. / High quantum yield molecular bromine photoelimination from mononuclear platinum(IV) complexes. In: Inorganic Chemistry. 2013 ; Vol. 52, No. 7. pp. 4113-4119.
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AB - 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.

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