FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W1820005935> ?p ?o ?g. }

• W1820005935 endingPage "28878" @default.
• W1820005935 startingPage "28866" @default.
• W1820005935 abstract "The theory of nuclear spin-lattice relaxation in methyl groups in solids has been a recurring problem in nuclear magnetic resonance (NMR) spectroscopy. The current view is that, except for extreme cases of low torsional barriers where special quantum effects are at stake, the relaxation behaviour of the nuclear spins in methyl groups is controlled by thermally activated classical jumps of the methyl group between its three orientations. The temperature effects on the relaxation rates can be modelled by Arrhenius behaviour of the correlation time of the jump process. The entire variety of relaxation effects in protonated methyl groups have recently been given a consistent quantum mechanical explanation not invoking the jump model regardless of the temperature range. It exploits the damped quantum rotation (DQR) theory originally developed to describe NMR line shape effects for hindered methyl groups. In the DQR model, the incoherent dynamics of the methyl group include two quantum rate (i.e., coherence-damping) processes. For proton relaxation only one of these processes is relevant. In this paper, temperature-dependent proton spin-lattice relaxation data for the methyl groups in polycrystalline methyltriphenyl silane and methyltriphenyl germanium, both deuterated in aromatic positions, are reported and interpreted in terms of the DQR model. A comparison with the conventional approach exploiting the phenomenological Arrhenius equation is made. The present observations provide further indications that incoherent motions of molecular moieties in the condensed phase can retain quantum character over much broader temperature range than is commonly thought." @default.
• W1820005935 created "2016-06-24" @default.
• W1820005935 creator A5000702674 @default.
• W1820005935 creator A5024738448 @default.
• W1820005935 creator A5042199951 @default.
• W1820005935 creator A5044021306 @default.
• W1820005935 creator A5082632055 @default.
• W1820005935 date "2015-01-01" @default.
• W1820005935 modified "2023-10-16" @default.
• W1820005935 title "A quantum mechanical alternative to the Arrhenius equation in the interpretation of proton spin–lattice relaxation data for the methyl groups in solids" @default.
• W1820005935 cites W1555048232 @default.
• W1820005935 cites W1970347978 @default.
• W1820005935 cites W1971138373 @default.
• W1820005935 cites W1971226302 @default.
• W1820005935 cites W1973349061 @default.
• W1820005935 cites W1976155382 @default.
• W1820005935 cites W1978464706 @default.
• W1820005935 cites W1979977275 @default.
• W1820005935 cites W1982951008 @default.
• W1820005935 cites W1983058688 @default.
• W1820005935 cites W1990598297 @default.
• W1820005935 cites W1991578141 @default.
• W1820005935 cites W1993846761 @default.
• W1820005935 cites W1994581241 @default.
• W1820005935 cites W1997406771 @default.
• W1820005935 cites W2002426729 @default.
• W1820005935 cites W2011074810 @default.
• W1820005935 cites W2012275108 @default.
• W1820005935 cites W2012959704 @default.
• W1820005935 cites W2019176620 @default.
• W1820005935 cites W2024059115 @default.
• W1820005935 cites W2025116561 @default.
• W1820005935 cites W2032473388 @default.
• W1820005935 cites W2036147895 @default.
• W1820005935 cites W2039396207 @default.
• W1820005935 cites W2039902612 @default.
• W1820005935 cites W2041831755 @default.
• W1820005935 cites W2046956802 @default.
• W1820005935 cites W2062838008 @default.
• W1820005935 cites W2063573332 @default.
• W1820005935 cites W2069074819 @default.
• W1820005935 cites W2070385013 @default.
• W1820005935 cites W2077131033 @default.
• W1820005935 cites W2080038941 @default.
• W1820005935 cites W2083590256 @default.
• W1820005935 cites W2110067040 @default.
• W1820005935 cites W2130860507 @default.
• W1820005935 cites W2131904845 @default.
• W1820005935 cites W2168662301 @default.
• W1820005935 cites W4240038239 @default.
• W1820005935 doi "https://doi.org/10.1039/c5cp04924e" @default.
• W1820005935 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/26451661" @default.
• W1820005935 hasPublicationYear "2015" @default.
• W1820005935 type Work @default.
• W1820005935 sameAs 1820005935 @default.
• W1820005935 citedByCount "5" @default.
• W1820005935 countsByYear W18200059352017 @default.
• W1820005935 countsByYear W18200059352018 @default.
• W1820005935 countsByYear W18200059352022 @default.
• W1820005935 crossrefType "journal-article" @default.
• W1820005935 hasAuthorship W1820005935A5000702674 @default.
• W1820005935 hasAuthorship W1820005935A5024738448 @default.
• W1820005935 hasAuthorship W1820005935A5042199951 @default.
• W1820005935 hasAuthorship W1820005935A5044021306 @default.
• W1820005935 hasAuthorship W1820005935A5082632055 @default.
• W1820005935 hasBestOaLocation W18200059352 @default.
• W1820005935 hasConcept C121332964 @default.
• W1820005935 hasConcept C147597530 @default.
• W1820005935 hasConcept C147789679 @default.
• W1820005935 hasConcept C15744967 @default.
• W1820005935 hasConcept C178790620 @default.
• W1820005935 hasConcept C185592680 @default.
• W1820005935 hasConcept C26873012 @default.
• W1820005935 hasConcept C2776029896 @default.
• W1820005935 hasConcept C2778565081 @default.
• W1820005935 hasConcept C2778870898 @default.
• W1820005935 hasConcept C2781311116 @default.
• W1820005935 hasConcept C54516573 @default.
• W1820005935 hasConcept C62520636 @default.
• W1820005935 hasConcept C77805123 @default.
• W1820005935 hasConcept C84114770 @default.
• W1820005935 hasConcept C86183883 @default.
• W1820005935 hasConcept C95121573 @default.
• W1820005935 hasConcept C97355855 @default.
• W1820005935 hasConceptScore W1820005935C121332964 @default.
• W1820005935 hasConceptScore W1820005935C147597530 @default.
• W1820005935 hasConceptScore W1820005935C147789679 @default.
• W1820005935 hasConceptScore W1820005935C15744967 @default.
• W1820005935 hasConceptScore W1820005935C178790620 @default.
• W1820005935 hasConceptScore W1820005935C185592680 @default.
• W1820005935 hasConceptScore W1820005935C26873012 @default.
• W1820005935 hasConceptScore W1820005935C2776029896 @default.
• W1820005935 hasConceptScore W1820005935C2778565081 @default.
• W1820005935 hasConceptScore W1820005935C2778870898 @default.
• W1820005935 hasConceptScore W1820005935C2781311116 @default.
• W1820005935 hasConceptScore W1820005935C54516573 @default.
• W1820005935 hasConceptScore W1820005935C62520636 @default.
• W1820005935 hasConceptScore W1820005935C77805123 @default.

• next