Matches in SemOpenAlex for { <https://semopenalex.org/work/W2069889112> ?p ?o ?g. }
Showing items 1 to 77 of
77
with 100 items per page.
- W2069889112 endingPage "1799" @default.
- W2069889112 startingPage "1788" @default.
- W2069889112 abstract "13C high-resolution solid-state NMR spectra and proton spin-lattice relaxation times T1 have been measured for β-quinol clathrate with trapped methanol molecules over a wide temperature range of 4.2–363 K. Above the transition point (∼67 K), a single and axially-symmetric 13C chemical shift tensor is observed for the trapped methanol, demonstrating that the molecules reorient themselves among three potential minima in the cavity. Its anisotropy allows us to obtain a temperature-dependent angle ϑ between the CO bond and the crystallographic c axis. Analysis of the T1 results gives the motional parameters (Ea = 0.7±0.2 kcal/mol, τ0 = 3.7×10−12 s for C3- reorientation and Ea = 2.4±0.1 kcal/mol, τ0 = 4.5×10−14 s for inversion about the cavity center) and the position of the methanol molecule in the cavity. Each 13C absorption line for both methanol and quinol is found to split into three below the transition point. This splitting indicates that the methanol molecules are settled down in any of the six orientations and simultaneously the quinol lattice is distorted from the space group R3̄ below the transition point. From the methanol 13C chemical shift tensor, the direction and the librational frequency of the settled CO-bond axis are determined. Ordering of the methanol dipoles, methyl tunneling motion, and residual C3-reorientation below the transition point are also discussed." @default.
- W2069889112 created "2016-06-24" @default.
- W2069889112 creator A5051193461 @default.
- W2069889112 creator A5087762712 @default.
- W2069889112 creator A5089496669 @default.
- W2069889112 date "1982-08-15" @default.
- W2069889112 modified "2023-10-17" @default.
- W2069889112 title "Study of static and dynamic structure of β-quinol-methanol clathrate by 13C high-resolution solid-state NMR and proton <i>T</i>1 measurements" @default.
- W2069889112 cites W1969539509 @default.
- W2069889112 cites W1977278651 @default.
- W2069889112 cites W1980153569 @default.
- W2069889112 cites W1980505301 @default.
- W2069889112 cites W1999080290 @default.
- W2069889112 cites W2003560901 @default.
- W2069889112 cites W2009018756 @default.
- W2069889112 cites W2010881902 @default.
- W2069889112 cites W2012011977 @default.
- W2069889112 cites W2012275108 @default.
- W2069889112 cites W2024903534 @default.
- W2069889112 cites W2025854836 @default.
- W2069889112 cites W2040935899 @default.
- W2069889112 cites W2041746040 @default.
- W2069889112 cites W2041872703 @default.
- W2069889112 cites W2053646519 @default.
- W2069889112 cites W2057343112 @default.
- W2069889112 cites W2063570497 @default.
- W2069889112 cites W2064690239 @default.
- W2069889112 cites W2070958139 @default.
- W2069889112 cites W2075416797 @default.
- W2069889112 cites W2111988130 @default.
- W2069889112 cites W2131904845 @default.
- W2069889112 cites W2622630522 @default.
- W2069889112 doi "https://doi.org/10.1063/1.444075" @default.
- W2069889112 hasPublicationYear "1982" @default.
- W2069889112 type Work @default.
- W2069889112 sameAs 2069889112 @default.
- W2069889112 citedByCount "36" @default.
- W2069889112 countsByYear W20698891122013 @default.
- W2069889112 crossrefType "journal-article" @default.
- W2069889112 hasAuthorship W2069889112A5051193461 @default.
- W2069889112 hasAuthorship W2069889112A5087762712 @default.
- W2069889112 hasAuthorship W2069889112A5089496669 @default.
- W2069889112 hasConcept C163111631 @default.
- W2069889112 hasConcept C178790620 @default.
- W2069889112 hasConcept C185592680 @default.
- W2069889112 hasConcept C2779607525 @default.
- W2069889112 hasConcept C32909587 @default.
- W2069889112 hasConcept C71240020 @default.
- W2069889112 hasConcept C8010536 @default.
- W2069889112 hasConceptScore W2069889112C163111631 @default.
- W2069889112 hasConceptScore W2069889112C178790620 @default.
- W2069889112 hasConceptScore W2069889112C185592680 @default.
- W2069889112 hasConceptScore W2069889112C2779607525 @default.
- W2069889112 hasConceptScore W2069889112C32909587 @default.
- W2069889112 hasConceptScore W2069889112C71240020 @default.
- W2069889112 hasConceptScore W2069889112C8010536 @default.
- W2069889112 hasIssue "4" @default.
- W2069889112 hasLocation W20698891121 @default.
- W2069889112 hasOpenAccess W2069889112 @default.
- W2069889112 hasPrimaryLocation W20698891121 @default.
- W2069889112 hasRelatedWork W1972602622 @default.
- W2069889112 hasRelatedWork W2010652585 @default.
- W2069889112 hasRelatedWork W2088061617 @default.
- W2069889112 hasRelatedWork W2091436431 @default.
- W2069889112 hasRelatedWork W2175263045 @default.
- W2069889112 hasRelatedWork W2316177446 @default.
- W2069889112 hasRelatedWork W2950032138 @default.
- W2069889112 hasRelatedWork W2950738575 @default.
- W2069889112 hasRelatedWork W3043087619 @default.
- W2069889112 hasRelatedWork W2121404800 @default.
- W2069889112 hasVolume "77" @default.
- W2069889112 isParatext "false" @default.
- W2069889112 isRetracted "false" @default.
- W2069889112 magId "2069889112" @default.
- W2069889112 workType "article" @default.