1. Organic Free-Radicals in Solution. Acyloxy Radicals

   
   

2. Detection of Diazenyl and Localized Hydrocarbon Biradicals by Single-Crystal Electron Paramagnetic Resonance Spectroscopy (EPR).

   
   

3. EPR studies of spin-labeled oligonucleotides
   

• Electron paramagnetic resonance spectroscopy (EPR):

  Wasylenko, W.; Kebede, N.; Showalter, B. M.; Matsunaga, N.; Miceli, A. P.; Ryzhkov, L. R.; Hadad, C. M.; Toscano, J. P.
  Experimental and Computational Confirmation of the Triplet Ground State of Oxynitrenes
  Journal of the American Chemical Society 2006, 128, 13142

  Evans, S. E.; Mon, S.; Singh, R.; Ryzhkov, L. R.; Szalai, V. A.
  DNA Oxidation in Anionic Reverse Micelles: Ruthenium-Mediated Damage at Guanine in Single- and Double-Stranded DNA
  Inorganic Chemistry 2006, 45(7), 3124

  Ryzhkov, L. R.; Toscano, J. P.
  Crystal Lattice Effects on the Orientation and Orbital Degeneracy of Nitric Oxide Trapped in Nitramine Single Crystals
  Journal of Crystal Growth and Design 2005, 5(6), 2066

  Josh Robinson; Vincent van Nostrand; David Schaefer; Walter Lowe; Steven S. Suib; Lev R. Ryzhkov
  Atomic Force Microscopy, Electron Paramagnetic Resonance and X-ray Fluorescence Investigations of Self-Assembled Lines from Colloidal Solutions of Lamellar MnO_x
  Chemistry of Materials 2002, 14(4), 1493

  Lev R. Ryzhkov and J. Michael McBride
  Structure and Exchange Coupling of ¹⁵NO₂/ ¹⁵NO₂ Radical Pairs Occupying Adjacent Solvent Cavities of a-HNIW, a Nitramine Hydrate
  Journal of the American Chemical Society 1997, 119(21), 4826

  Lev R. Ryzhkov and J. Michael McBride
  Low-Temperature Reactions in Single Crystals of Two Polymorphs of the Polyciclic Nitramine ¹⁵N-HNIW
  Journal of Physical Chemistry 1996, 100(1), 167

• Proton nuclear magnetic resonance spectroscopy (¹H-NMR):

  Timothy C. Bentz and Lev R. Ryzhkov
  Study of Chemical Shift Variations in Tricyclic Urazoles with a Norbornane Skeleton
  Spectroscopy Letters 2006, 39(2),

  Ferraris, D.; Cox, C.; Dudding, T.; Young, B.; Drury, W. J. III, Ryzhkov, L.; Lectka, T.
  Catalytic, Enantioselective Alkylation of ±-Imino Esters: The Synthesis of Non-natural ±/-Amino Acid Derivatives
  Journal of the American Chemical Society 2002, 124(1), 67

  Lev R. Ryzhkov
  Stereochemical effects on ¹H-NMR chemical shifts in 2,3-diazabicyclo[2.2.1]hept-2-ene (DBH), 2,3-diazabicyclo[2.2.2]oct-2-ene (DBO) and related molecules
  Spectroscopy Letters 1998, 31(5), 1089

• Cyclic hydrocarbon biradicals:

  Brett M. Showalter, Timothy C. Bentz, Lev R. Ryzhkov, Christopher M. Hadad, John P. Toscano
  Time-Resolved IR Studies of Triplet 1,3-Cyclopentanediyl
  Journal of Physical Organic Chemistry 2000, 13, 1

• Acyloxy radicals:

  Alicia Fraind*, Ryan Turncliff**, Teri Fox*, Brian Salisbury*, Justin Sodano*, Adam Elabd*.; Ryzhkov, L. R.
  Geminate Reactions and the Lifetimes of Acyloxy Radicals in Thermal Decomposition of Symmetrical Primary Diacyl Peroxides
  Journal of Undergrad. Chem. Res. 2007, 6(2), 67

  Lev R. Ryzhkov
  Radical Nature of Alkene and Ester from Thermal Decomposition of Primary Alkyl Diacyl Peroxide
  Journal of Organic Chemistry 1996, 61(8), 2801

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