Matches in SemOpenAlex for { <https://semopenalex.org/work/W2026971401> ?p ?o ?g. }
Showing items 1 to 86 of
86
with 100 items per page.
- W2026971401 endingPage "6833" @default.
- W2026971401 startingPage "6824" @default.
- W2026971401 abstract "Rotationally symmetric groups containing nuclei with nonzero spin often exhibit uniquely quantum mechanical properties. Symmetry requirements on the total wave function restrict the allowable combinations of electronic, vibrational, rotational, and nuclear spin wave functions. NMR relaxation depends on operators that act on both the nuclear spin and rotational wave functions. The interdependence of the wave functions produces quantum statistical weights in the rotational correlation functions that can differ from semiclassical or classical probability distributions. The quantum statistical weights for the reorientational correlation functions in NMR relaxation have been derived for A3 and AX3 systems of spin 1/2 nuclei and for deuterium relaxation in a deuterated methyl or equivalent group. It is found that classical weights apply to deuterium relaxation. The A3 system has distinctly nonclassical weights. And the AX3 system has eight sets of weights, with different weights applying to different types of correlation functions. One of the eight is the classical weight, and two of the sets can lead to terms that do not arise in the usual, semiclassical theory. It is shown that, under certain circumstances, the predictions of this quantum mechanical theory differ from those of the semiclassical model. The present theory also predicts that changing the symmetry of the electronic/vibrational states can alter the NMR relaxation behavior. Calculations with a stochastic quantum dynamical model indicate that these differences may be experimentally important for, among other things, relaxation involving a methyl group in a biomolecule at physiological temperatures." @default.
- W2026971401 created "2016-06-24" @default.
- W2026971401 creator A5073759984 @default.
- W2026971401 date "1990-11-01" @default.
- W2026971401 modified "2023-09-24" @default.
- W2026971401 title "Quantum statistical weights for reorientational correlation functions in the nuclear magnetic resonance relaxation of methyl groups" @default.
- W2026971401 cites W1658364917 @default.
- W2026971401 cites W1968416391 @default.
- W2026971401 cites W1980364814 @default.
- W2026971401 cites W1981003641 @default.
- W2026971401 cites W1987102204 @default.
- W2026971401 cites W2013678493 @default.
- W2026971401 cites W2019114127 @default.
- W2026971401 cites W2040265038 @default.
- W2026971401 cites W2049138641 @default.
- W2026971401 cites W2063785360 @default.
- W2026971401 cites W2085257795 @default.
- W2026971401 cites W2085693811 @default.
- W2026971401 cites W2086547732 @default.
- W2026971401 cites W2089127894 @default.
- W2026971401 cites W2225510658 @default.
- W2026971401 cites W2330195631 @default.
- W2026971401 doi "https://doi.org/10.1063/1.458927" @default.
- W2026971401 hasPublicationYear "1990" @default.
- W2026971401 type Work @default.
- W2026971401 sameAs 2026971401 @default.
- W2026971401 citedByCount "3" @default.
- W2026971401 crossrefType "journal-article" @default.
- W2026971401 hasAuthorship W2026971401A5073759984 @default.
- W2026971401 hasConcept C113603373 @default.
- W2026971401 hasConcept C121332964 @default.
- W2026971401 hasConcept C15744967 @default.
- W2026971401 hasConcept C174038435 @default.
- W2026971401 hasConcept C184779094 @default.
- W2026971401 hasConcept C185592680 @default.
- W2026971401 hasConcept C2776029896 @default.
- W2026971401 hasConcept C32909587 @default.
- W2026971401 hasConcept C41999313 @default.
- W2026971401 hasConcept C42704618 @default.
- W2026971401 hasConcept C46141821 @default.
- W2026971401 hasConcept C535169671 @default.
- W2026971401 hasConcept C58364064 @default.
- W2026971401 hasConcept C62520636 @default.
- W2026971401 hasConcept C77805123 @default.
- W2026971401 hasConcept C84114770 @default.
- W2026971401 hasConcept C84662259 @default.
- W2026971401 hasConcept C97355855 @default.
- W2026971401 hasConceptScore W2026971401C113603373 @default.
- W2026971401 hasConceptScore W2026971401C121332964 @default.
- W2026971401 hasConceptScore W2026971401C15744967 @default.
- W2026971401 hasConceptScore W2026971401C174038435 @default.
- W2026971401 hasConceptScore W2026971401C184779094 @default.
- W2026971401 hasConceptScore W2026971401C185592680 @default.
- W2026971401 hasConceptScore W2026971401C2776029896 @default.
- W2026971401 hasConceptScore W2026971401C32909587 @default.
- W2026971401 hasConceptScore W2026971401C41999313 @default.
- W2026971401 hasConceptScore W2026971401C42704618 @default.
- W2026971401 hasConceptScore W2026971401C46141821 @default.
- W2026971401 hasConceptScore W2026971401C535169671 @default.
- W2026971401 hasConceptScore W2026971401C58364064 @default.
- W2026971401 hasConceptScore W2026971401C62520636 @default.
- W2026971401 hasConceptScore W2026971401C77805123 @default.
- W2026971401 hasConceptScore W2026971401C84114770 @default.
- W2026971401 hasConceptScore W2026971401C84662259 @default.
- W2026971401 hasConceptScore W2026971401C97355855 @default.
- W2026971401 hasIssue "9" @default.
- W2026971401 hasLocation W20269714011 @default.
- W2026971401 hasOpenAccess W2026971401 @default.
- W2026971401 hasPrimaryLocation W20269714011 @default.
- W2026971401 hasRelatedWork W1535945643 @default.
- W2026971401 hasRelatedWork W1580231441 @default.
- W2026971401 hasRelatedWork W2004675491 @default.
- W2026971401 hasRelatedWork W2017310723 @default.
- W2026971401 hasRelatedWork W2026971401 @default.
- W2026971401 hasRelatedWork W2064054972 @default.
- W2026971401 hasRelatedWork W2079432517 @default.
- W2026971401 hasRelatedWork W2116246980 @default.
- W2026971401 hasRelatedWork W3110103298 @default.
- W2026971401 hasRelatedWork W3144433896 @default.
- W2026971401 hasVolume "93" @default.
- W2026971401 isParatext "false" @default.
- W2026971401 isRetracted "false" @default.
- W2026971401 magId "2026971401" @default.
- W2026971401 workType "article" @default.