Vapour pressures and enthalpies of sublimation of 1,3-dimethyl-5-ethyluracil and 1,3-dimethyl-5,6-pentamethyleneuracil
β Scribed by Manuel Colomina; Pilar Jimenez; Concepcion Turrion; Miron Kaminski; Wojciech Zielenkiewicz
- Publisher
- Elsevier Science
- Year
- 1983
- Tongue
- English
- Weight
- 192 KB
- Volume
- 68
- Category
- Article
- ISSN
- 0040-6031
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π SIMILAR VOLUMES
The results of vapour-pressure measurements for several 5-alkyl derivatives of 1,3-dimethyluracil are presented along with calculated molar enthalpies of sublimation D g s Hm. The results show a nonlinear erratic dependence of D g s Hm on the number of carbon atoms in the alkyl substituent in positi
The standard pΠ s 0.1 MPa massic energies of combustion β¬ uΠ at T s 298.15 K were c measured by static bomb combustion calorimetry for 5-amino-6-nitroquinoline and 4aminoquinaldine, from which the standard molar enthalpies of formation of both compounds, in the crystalline state, were derived. The s
The standard ( pΒ°= 0.1 MPa) molar enthalpies of formation DfHΒ°m for crystalline 5-, 6-, 8-nitroquinoline and 8-nitroquinaldine were derived from the standard molar enthalpies of combustion in oxygen at T = 298.15 K DcHΒ°m, measured by static bomb combustion calorimetry; the Knudsen mass-loss effusion
The standard ( p o = 0.1 MPa) molar enthalpies of combustion in oxygen, at T = 298.15 K, for crystalline 3,5-dimethylpyrazole (Me 2 Pyr), 3,5-dimethyl-4-nitrosopyrazole (Me 2 PyrNO), 1,3,5-trimethyl-4-nitrosopyrazole (Me 3 PyrNO), and 3,5-dimethyl-1phenyl-4-nitrosopyrazole (Me 2 PhPyrNO) were measur