Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Nikolai S. Golubev"'
Autor:
D. N. Shchepkin, Nikolai S. Golubev
Publikováno v:
Chemical Physics Letters. 591:292-295
To rationalize the recently found (Garbacz et al., 2012) [1] difference in magnetic shielding for H and D nuclei in HD, the contribution of excited Π g states has been considered in combination with a symmetry breaking term in Hamiltonian as perturb
Autor:
Jing Guo, Nikolai S. Golubev, Hans-Heinrich Limbach, Benjamin Koeppe, Peter M. Tolstoy, S. N. Smirnov, Gleb S. Denisov
Publikováno v:
The Journal of Physical Chemistry A. 114:10775-10782
The (1)H and (13)C NMR spectra of 17 OHN hydrogen-bonded complexes formed by CH(3)(13)COOH(D) with 14 substituted pyridines, 2 amines, and N-methylimidazole have been measured in the temperature region between 110 and 150 K using CDF(3)/CDF(2)Cl mixt
Autor:
Nikolai S. Golubev, Peter M. Tolstoy, Michael D. Toney, Gleb S. Denisov, Shasad Sharif, Hans-Heinrich Limbach, S. N. Smirnov
Publikováno v:
Journal of Molecular Structure. :319-327
As a model system for the internal and external aldimines of the coenzyme pyridoxal phosphate (PLP) in PLP dependent enzymes we have studied the 1 H and 15 N NMR spectra of the 15 N labeled Schiff base 3-carboxy-5-methyl-salicylidenaniline ( 1 ) diss
Autor:
Nikolai S. Golubev, Peter M. Tolstoy, Hans Benedict, Mariusz Pietrzak, Gleb S. Denisov, Hans-Heinrich Limbach
Publikováno v:
Journal of Molecular Structure. 706:115-119
In this paper, empirical corrections for anharmonic ground-state vibrations of hydrogen and deuterium in the hydrogen bridges A–L⋯B, L=H, D are introduced into the geometric hydrogen bond correlation analysis based on the empirical Pauling valenc
Autor:
Gleb S. Denisov, Hans-Heinrich Limbach, Nikolai S. Golubev, Peter M. Tolstoy, S. N. Smirnov, Ilya G. Shenderovich
Publikováno v:
Journal of Molecular Structure. 700:19-27
H and 15 N NMR spectra of 10 complexes exhibiting strong OHN hydrogen bonds formed by 15 N-labeled collidine and different proton donors, partially deuterated in mobile proton sites, have been observed by low-temperature NMR spectroscopy using a low-
Publikováno v:
Journal of Molecular Structure. 700:3-12
Using low-temperature NMR ( 1 H, 19 F) technique in the slow exchange regime, the solutions containing tetrabutylammonium (TBA) acetate and HF have been studied in an aprotic freon mixture, CDF 3 /CDF 2 Cl, exhibiting a dielectric permittivity, which
Publikováno v:
Journal of Molecular Structure. 697:9-15
The solvent induced temperature dependence of NMR parameters (proton and fluorine chemical shifts, the two-bond scalar spin coupling constant across the hydrogen bridge, 2h J FF ) for dihydrogen trifluoride anion, (FH) 2 F − , in a polar aprotic so
Autor:
Gleb S. Denisov, Hans-Heinrich Limbach, S. N. Smirnov, Nikolai S. Golubev, Ilya G. Shenderovich, Peter M. Tolstoy
Publikováno v:
Phys. Chem. Chem. Phys.. 4:5488-5497
Using liquid state 1H, 2H and 19F NMR spectroscopy in the temperature range 110–130 K we have studied the hydrogen-bonded anions (FH)2F− and (FH)3F− and their partially and fully deuterated analogs dissolved in the low-freezing freon mixture CD
Autor:
Natalia V. Belkova, Nikolai S. Golubev, Elena S. Shubina, Hans-Heinrich Limbach, Lina M. Epstein, A. V. Ionidis, Stephan Gruendemann
Publikováno v:
European Journal of Inorganic Chemistry. 2001:1753-1761
The interaction of the ruthenium hydride complex RuH ≡ CpRuH(CO)(PCy3) (1) with various proton donors AH ≡ CF3CH2OH (2a), (CF3)2CHOH (2b), (CF3)3COH (2c), CF3COOH (2d), and HBF4 (2e) has been studied by variable-temperature IR spectroscopy using
Autor:
Gerd Buntkowsky, Ilja G. Shenderovich, Hans-Heinrich Limbach, Phillipe Lorente, Nikolai S. Golubev, Gleb S. Denisov
Publikováno v:
Magnetic Resonance in Chemistry. 39:S18-S29
A novel series of hydrogen-bonded solid 1:1 acid-base complexes of N-15-labeled 2,4,6-trimethylpyridine (collidine) with carboxylic acids and their hydrogen bond deuterated analogs were synthesized and studied by H-1 magic angle spinning (MAS) and N-