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http://hdl.handle.net/11701/1973
Полная запись метаданных
Поле DC | Значение | Язык |
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dc.contributor.author | Mori Massiel, Rath Nigam | - |
dc.contributor.author | Gobble Chase, Chickos James | - |
dc.contributor.author | Samarov Artemiy A., Verevkin Sergey P. | - |
dc.date.accessioned | 2016-04-08T07:51:26Z | - |
dc.date.available | 2016-04-08T07:51:26Z | - |
dc.date.issued | 2016 | - |
dc.identifier.issn | 0021-9568 | - |
dc.identifier.uri | http://hdl.handle.net/11701/1973 | - |
dc.description.abstract | The vaporization enthalpy of imidazo[1,2-a]pyrazine is evaluated by correlation gas chromatography using two sets of standards and by transpiration. Vaporization enthalpies were evaluated using heterocyclic standards with dipole moments that vary from 0 to 3.0 D and using standards with dipole moments > 3.0 D. A value of (70.7 ± 1.0) kJ·mol−1 measured by transpiration compares to (67.9 ± 1.4) kJ·mol−1 measured by correlation gas chromatography using standards characterized by dipole moments > 3.0 D. The results suggest that imidazo[1,2-a]pyrazine is a member of this series of compounds whose vaporization enthalpies exceed those less polar heterocycles by a fairly constant amount, (6.9 ± 0.3) kJ·mol−1,in this case by (5.9 ± 3.0) kJ·mol−1 using the less polar heterocycles. The crystal structures of phthalazine, another member of the polar series, and of imidazo[1,2-a]pyrazine were determined to examine whether π−π stacking, present in the solid state of two other members of the polar series, was a characteristic of this series. If present in the liquid, π−π stacking could offer a possible explanation for the vaporization enthalpy differences observed. The sublimation enthalpy of imidazo[1,2-a]pyrazine was also evaluated. | en_GB |
dc.language.iso | en | en_GB |
dc.publisher | American Chemical Society | en_GB |
dc.relation.ispartofseries | Journal of Chemical & Engineering Data;61 | - |
dc.title | Vaporization, Sublimation Enthalpy, and Crystal Structures of Imidazo[1,2‑a]pyrazine and Phthalazine | en_GB |
dc.type | Article | en_GB |
Располагается в коллекциях: | Articles |
Файлы этого ресурса:
Файл | Описание | Размер | Формат | |
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Mori et al. - 2016 - Vaporization, Sublimation Enthalpy, and Crystal Structures of Imidazo1,2- a pyrazine and Phthalazine.pdf | 3,11 MB | Adobe PDF | Просмотреть/Открыть |
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