Matches in SemOpenAlex for { <https://semopenalex.org/work/W2084734137> ?p ?o ?g. }
Showing items 1 to 76 of
76
with 100 items per page.
- W2084734137 abstract "Abstract The molecular motions and the phase transitions in crystalline bromopentamethylbenzene (BPMP) and iodopentamethylbenzene (IPMB) have been studied 1H NMR spin–lattice relaxation time T1 measurements and differential scanning calorimetry. A solid–solid phase transition was observed at 399 K for BPMB and three solid–solid phase transitions were 237, 277, and 316 K for IPMB. T1 was calculated theoretically with the stochastic process for the reorientations in the six potential wells of five different depths depending on the halogen position. The C3 reorientation of CH3 groups was observed as a gradual decrease of T1 in both BPMB and IPMB at temperatures lower than 145 and 130 K, respectively. It has been clarified that all the in-plane reorientations activated simultaneously result in a deep T1 minimum of 43 ms for BPMB. For IPMB, the calculation implies that the reorientations among the six potential wells are activated separately in a wide range of temperature; those from moderately deep two potential wells contribute mainly to the deepest T1 minimum of 135 ms and those from the deepest two potential wells are not yet activated in the measured temperature region. IPMB melts at 412 K, where the latter start to contribute to the magnetic relaxation, while BPMB melts at 436 K, where all the reorientations have been already activated much." @default.
- W2084734137 created "2016-06-24" @default.
- W2084734137 creator A5045066186 @default.
- W2084734137 creator A5054366146 @default.
- W2084734137 creator A5055332103 @default.
- W2084734137 creator A5068487431 @default.
- W2084734137 creator A5090325884 @default.
- W2084734137 date "2003-01-01" @default.
- W2084734137 modified "2023-09-24" @default.
- W2084734137 title "A 1H NMR study of molecular motions in bromo- and iodopentamethylbenzene" @default.
- W2084734137 cites W1990672301 @default.
- W2084734137 cites W2007547782 @default.
- W2084734137 cites W2020938510 @default.
- W2084734137 cites W2026790359 @default.
- W2084734137 cites W2028981806 @default.
- W2084734137 cites W2035268561 @default.
- W2084734137 cites W2053011492 @default.
- W2084734137 cites W2057568863 @default.
- W2084734137 cites W2061261051 @default.
- W2084734137 cites W2062102564 @default.
- W2084734137 cites W2072261896 @default.
- W2084734137 cites W604802604 @default.
- W2084734137 cites W1986456295 @default.
- W2084734137 doi "https://doi.org/10.1016/s0022-2860(02)00470-2" @default.
- W2084734137 hasPublicationYear "2003" @default.
- W2084734137 type Work @default.
- W2084734137 sameAs 2084734137 @default.
- W2084734137 citedByCount "5" @default.
- W2084734137 countsByYear W20847341372017 @default.
- W2084734137 crossrefType "journal-article" @default.
- W2084734137 hasAuthorship W2084734137A5045066186 @default.
- W2084734137 hasAuthorship W2084734137A5054366146 @default.
- W2084734137 hasAuthorship W2084734137A5055332103 @default.
- W2084734137 hasAuthorship W2084734137A5068487431 @default.
- W2084734137 hasAuthorship W2084734137A5090325884 @default.
- W2084734137 hasConcept C121332964 @default.
- W2084734137 hasConcept C149288129 @default.
- W2084734137 hasConcept C15744967 @default.
- W2084734137 hasConcept C178790620 @default.
- W2084734137 hasConcept C185592680 @default.
- W2084734137 hasConcept C2776029896 @default.
- W2084734137 hasConcept C39353612 @default.
- W2084734137 hasConcept C39519442 @default.
- W2084734137 hasConcept C44280652 @default.
- W2084734137 hasConcept C77805123 @default.
- W2084734137 hasConcept C8010536 @default.
- W2084734137 hasConcept C97355855 @default.
- W2084734137 hasConceptScore W2084734137C121332964 @default.
- W2084734137 hasConceptScore W2084734137C149288129 @default.
- W2084734137 hasConceptScore W2084734137C15744967 @default.
- W2084734137 hasConceptScore W2084734137C178790620 @default.
- W2084734137 hasConceptScore W2084734137C185592680 @default.
- W2084734137 hasConceptScore W2084734137C2776029896 @default.
- W2084734137 hasConceptScore W2084734137C39353612 @default.
- W2084734137 hasConceptScore W2084734137C39519442 @default.
- W2084734137 hasConceptScore W2084734137C44280652 @default.
- W2084734137 hasConceptScore W2084734137C77805123 @default.
- W2084734137 hasConceptScore W2084734137C8010536 @default.
- W2084734137 hasConceptScore W2084734137C97355855 @default.
- W2084734137 hasLocation W20847341371 @default.
- W2084734137 hasOpenAccess W2084734137 @default.
- W2084734137 hasPrimaryLocation W20847341371 @default.
- W2084734137 hasRelatedWork W2030862399 @default.
- W2084734137 hasRelatedWork W2039722015 @default.
- W2084734137 hasRelatedWork W2059831734 @default.
- W2084734137 hasRelatedWork W2316298115 @default.
- W2084734137 hasRelatedWork W2777412394 @default.
- W2084734137 hasRelatedWork W2891110253 @default.
- W2084734137 hasRelatedWork W2949813971 @default.
- W2084734137 hasRelatedWork W2951375394 @default.
- W2084734137 hasRelatedWork W2981874191 @default.
- W2084734137 hasRelatedWork W3005342873 @default.
- W2084734137 isParatext "false" @default.
- W2084734137 isRetracted "false" @default.
- W2084734137 magId "2084734137" @default.
- W2084734137 workType "article" @default.