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Energetic studies of two oxygen heterocyclic compounds Xanthone and tetrahydro-γ-pyrone
| Content Provider | Semantic Scholar |
|---|---|
| Author | Freitas, Vera L. S. Gomes, José R. B. Silva, Maria D. M. C. Ribeiro Da |
| Copyright Year | 2009 |
| Abstract | The present work reports an experimental thermochemical study supported by state of the art calculations of two heterocyclic compounds containing oxygen in the ring: xanthone and tetrahydro-γ-pyrone. The standard (pº = 0.1 MPa) molar enthalpies of formation in the condensed phase, at T = 298.15 K, were derived from the measurements of the standard molar energies of combustion in oxygen atmosphere, using a static bomb calorimeter. The standard molar enthalpies of sublimation or vaporization, at T = 298.15 K, of the title compounds were obtained from Calvet microcalorimetry measurements. These values were used to derive the standard enthalpies of formation of the compounds in the gas-phase at the same temperature, which were compared with estimated data from G3(MP2)//B3LYP computations. |
| Starting Page | 827 |
| Ending Page | 833 |
| Page Count | 7 |
| File Format | PDF HTM / HTML |
| DOI | 10.1007/s10973-009-0233-y |
| Volume Number | 97 |
| Alternate Webpage(s) | https://static-content.springer.com/esm/art:10.1007%2Fs10973-009-0233-y/MediaObjects/10973_2009_233_MOESM1_ESM.pdf |
| Alternate Webpage(s) | https://doi.org/10.1007/s10973-009-0233-y |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
