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pyramidal inversion (35) 35
chemistry, multidisciplinary (20) 20
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Journal of the American Chemical Society, ISSN 0002-7863, 05/2008, Volume 130, Issue 20, pp. 6362 - 6366
Amine nitrogen inversion, difficult to observe in aqueous solution, is followed in a chiral, supramolecular host molecule with purely rotational T-symmetry that reduces the local symmetry... 
BASIC SOLUTION | SLOW CHEMICAL-EXCHANGE | NMR | TERTIARY-AMINES | NUCLEAR-MAGNETIC-RESONANCE | GUEST EXCHANGE | HOST | AMINE INVERSION | CHEMISTRY, MULTIDISCIPLINARY | CROWDED PIPERIDINES | PYRAMIDAL INVERSION | Amines | Solvation | Chemical properties | Hydrogen bonding | Chirality | Analysis
Journal Article
European Journal of Organic Chemistry, ISSN 1434-193X, 06/2018, Volume 2018, Issue 23, pp. 2984 - 2994
... because of their low inversion barriers, whereas numerous enantiomers of analogous P‐chirogenic phosphanes display significantly higher configurational stability. In 1911... 
Inversion barrier | Chirality | Isomerization | Racemization | P ligands | Phosphanes | Chiral resolution | PHOSPHORUS | RHODIUM | STABILITY | CHEMISTRY, ORGANIC | PYRAMIDAL INVERSION | LIGANDS | DIPHOSPHINES | REDUCTION | PHOSPHINES | NITROGEN | ASYMMETRIC HYDROGENATION
Journal Article
Journal of Structural Chemistry, ISSN 0022-4766, 11/2018, Volume 59, Issue 6, pp. 1374 - 1380
Journal Article
New journal of chemistry, ISSN 1144-0546, 06/2020, Volume 44, Issue 21, pp. 8763 - 8770
The study of inversion barriers for ninety-four P(iii)-containing compounds has been carried out using DFT calculations... 
ATOMS LI | NITROGEN INVERSION | CONFIGURATION-INTERACTION | ZETA VALENCE QUALITY | RING STRAIN | EDGE INVERSION | HARTREE-FOCK | CHEMISTRY, MULTIDISCIPLINARY | ELECTRON-PAIR APPROXIMATION | GAUSSIAN-BASIS SETS | PYRAMIDAL INVERSION
Journal Article
The Journal of Organic Chemistry, ISSN 0022-3263, 11/2013, Volume 78, Issue 22, pp. 11623 - 11626
The nitrogen inversion of a N-phenyl aziridine fused to a succinimide ring is influenced by the presence of a phenyl ring in the succinimide moiety... 
RATES | ENERGY | STEREODYNAMICS | SPECTROSCOPY | RING | NUCLEAR-MAGNETIC-RESONANCE | SUBSTITUENTS | CHEMISTRY, ORGANIC | STEREOSELECTIVE-SYNTHESIS | SPECTRA | PYRAMIDAL INVERSION | Usage | Aziridines | Chemical properties | Research | Nuclear magnetic resonance | Cyclic compounds
Journal Article
The Journal of Physical Chemistry A, ISSN 1089-5639, 04/1998, Volume 102, Issue 18, pp. 3193 - 3201
.... Stationary points for nitrogen inversion are located on the ground-state potential energy surfaces, and high-level barriers to nitrogen inversion are obtained... 
CYCLOPROPANE | PERTURBATION-THEORY | MOLECULAR CALCULATIONS | ETHYLENE-OXIDE | PHYSICS, ATOMIC, MOLECULAR & CHEMICAL | IMPLEMENTATION | CHEMISTRY, PHYSICAL | BASIS-SETS | COUPLED CLUSTER SINGLE | ELECTRON CORRELATION | PYRAMIDAL INVERSION | FIRST-ROW | Electronic structure | Nitrogen | Heterocyclic compounds | Analysis
Journal Article
Organic Letters, ISSN 1523-7060, 06/2004, Volume 6, Issue 13, pp. 2197 - 2200
A theoretical study on the pyramidal inversion of the chiral sulfur compounds SO(X)(Me) (X = Cl, OMe, p-MePh) has been carried out by means of the DFT... 
NITROGEN INVERSION | THERMAL RACEMIZATION | ASYMMETRIC-SYNTHESIS | BARRIER | STEREOCHEMISTRY | CHEMISTRY, ORGANIC | BIS-SULFOXIDES | INTERCONVERSION | SULFINYL CHLORIDES | DYNAMIC KINETIC RESOLUTION | PYRAMIDAL INVERSION
Journal Article
RUSSIAN JOURNAL OF ORGANIC CHEMISTRY, ISSN 1070-4280, 02/2019, Volume 55, Issue 2, pp. 161 - 167
The NMR spectra of several heterocyclic compounds synthesized at Omsk universities revealed manifestation of a diasteomerism at a large (up to fifteen bonds)... 
NMR | oxazolopyridines | pyramidal nitrogen inversion | CHEMISTRY, ORGANIC | podand diastereomerism | secondary helical structure of the hydroxyethyl chain | PODANDS | Diastereomers | Heterocyclic compounds
Journal Article
Ведомости Научного центра экспертизы средств медицинского применения, ISSN 1991-2919, 02/2020, Volume 10, Issue 1, pp. 63 - 76
The number, shape and position of NMR spectral lines depend on dynamic processes, and this creates certain difficulties in identification of pharmaceutical... 
clopidogrel | buserelin | iopromide | omeprazole | goserelin | triptorelin | enalapril | risperidone | pyramidal nitrogen inversion | structure identification | inhibited rotation | prototropic tautomerism | proroxan | nmr spectroscopy | valsartan | dynamic processes
Journal Article
Magnetic Resonance in Chemistry, ISSN 0749-1581, 08/1995, Volume 33, Issue 8, pp. 664 - 668
Journal Article
Physical Chemistry Chemical Physics, ISSN 1463-9076, 2009, Volume 11, Issue 14, pp. 2387 - 2395
.... Assessment of heat of formation, ring strain energy, barriers to inversion of nitrogen, and NMR criteria leads to understanding of issues related to vicinal lone pair repulsion and aromatic stabilization... 
DENSITY FUNCTIONALS | BASIS SETS | MOLECULAR CALCULATIONS | DIALKYL-TRIAZIRIDINES | PHYSICS, ATOMIC, MOLECULAR & CHEMICAL | NITROGEN-INVERSION | CHEMISTRY, PHYSICAL | INORGANIC RINGS | 3-MEMBERED RINGS | CONFORMATIONAL-ANALYSIS | THERMAL EPIMERIZATION | PYRAMIDAL INVERSION
Journal Article
The Journal of Organic Chemistry, ISSN 0022-3263, 12/1991, Volume 56, Issue 25, pp. 7034 - 7038
Rate constants for nitrogen inversion in N-benzyl-N-methylhydroxylamine, NN-diethylhydroxylamine, 1-hydroxy-2,2,4,4-tetramethylpyrrolidine, their conjugate bases, and their O-acetyl derivatives... 
NMR | MECHANISM | AMINES | ELECTRONEGATIVITY | CHEMISTRY, ORGANIC | BARRIERS | PYRAMIDAL INVERSION | MOLECULES
Journal Article
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, ISSN 0002-7863, 04/1997, Volume 119, Issue 17, pp. 4050 - 4058
.... Ratios of k(H)/k(N) show that the two ''planar'' sec-N centers of the coordinated cyclen ligand are particularly susceptible to inversion, with estimated k(2... 
H-1-NMR | NITROGEN INVERSION | BARRIER | ISOMERS | CHEMISTRY | IONS | K DY CHEMISTRY | PYRAMIDAL INVERSION
Journal Article
Journal of Molecular Structure: THEOCHEM, ISSN 0166-1280, 1997, Volume 398, pp. 427 - 434
We show that the MM3 force field provides a reasonable modelling of the transition state of nitrogen inversion-rotation (NIR... 
Molecular mechanics | Nitrogen inversion | Amines | Rotation | nitrogen inversion | STEREODYNAMICS | molecular mechanics | rotation | BARRIER | BONDS | amines | SURFACE | CHEMISTRY, PHYSICAL | DYNAMIC NMR | STRAIN | PYRAMIDAL INVERSION
Journal Article
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