Brandon R. Galan
Pacific Northwest National Laboratory
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Featured researches published by Brandon R. Galan.
Inorganic Chemistry | 2009
Boris Le Guennic; Tavon Floyd; Brandon R. Galan; Jochen Autschbach; Jerome B. Keister
Ligand substitution on cis-Ru(PPh(3))(2)(1,2-O(2)C(6)H(4))(2) gives cis-RuL(1)L(2)(1,2-O(2)C(6)H(4))(2) (L(1) = PPh(3), L(2) = P(OPh)(3), PBu(3); L(1) = L(2) = PBu(3), P(OMe)(3)). Syntheses of cis-Ru(PPh(3))(2)(3,4-O(2)C(6)H(2)(5-OH)CO(2)Me)(2) and cis-Ru(PPh(3))(2)(AGSQ)(2) (AGSQ = the semiquinone derived from 1,2,3-trihydroxyanthracene-9,10-dione) are also reported. The upfield chemical shifts and line broadening of the semiquinone 4,5-proton resonances in the NMR spectra indicate that these complexes, while having no detectable magnetic moments, have a weak, temperature-, ligand- and solvent-variable residual paramagnetism, not previously recognized in this series. Density functional theory (DFT) calculations predict a low-lying triplet state, about 14 kJ/mol (0.15 eV) above the singlet ground state. The paramagnetic effects on the NMR spectra are attributed to singlet-triplet equilibria. Temperature dependence of the proton resonances of the semiquinone rings of cis-Ru(PPh(3))(2)(1,2-O(2)C(6)H(4))(2) was used to calculate the singlet-triplet free energy difference as 17.5-18.0 kJ/mol in toluene.
Organic Letters | 2007
Brandon R. Galan; Kyle P. Kalbarczyk; Steven Szczepankiewicz; and Jerome B. Keister; Steven T. Diver
Journal of the American Chemical Society | 2005
Brandon R. Galan; Milan Gembicky; Paulina M. Dominiak; Jerome B. Keister; Steven T. Diver
Journal of the American Chemical Society | 2011
Brandon R. Galan; Julia Schöffel; John C. Linehan; Candace Seu; Aaron M. Appel; John A. S. Roberts; Monte L. Helm; Uriah J. Kilgore; Jenny Y. Yang; Daniel L. DuBois; Clifford P. Kubiak
Journal of the American Chemical Society | 2009
Brandon R. Galan; Mateusz B. Pitak; Milan Gembicky; Jerome B. Keister; Steven T. Diver
Journal of the American Chemical Society | 2005
Brandon R. Galan; Anthony J. Giessert; Jerome B. Keister; Steven T. Diver
Journal of the American Chemical Society | 2003
Russell A. Stapleton; Brandon R. Galan; Scott Collins; Richard S. Simons; Jered C. Garrison; Wiley J. Youngs
Organometallics | 2008
Brandon R. Galan; Mateusz B. Pitak; Jerome B. Keister; Steven T. Diver
Organometallics | 2006
Russell A. Stapleton; Abdulaziz Al-Humydi; Jianfang Chai; Brandon R. Galan; Scott Collins
Organometallics | 2014
Brandon R. Galan; Eric S. Wiedner; Monte L. Helm; John C. Linehan; Aaron M. Appel