Autor:	W G Penney
Rok vydání:	1934
Předmět:	chemistry.chemical_compound Ethylene Dimethyl fumarate Stereochemistry Chemistry Thermodynamics Dimethyl maleate Twist
Zdroj:	Proceedings of the Physical Society. 46:333-337
ISSN:	0959-5309
DOI:	10.1088/0959-5309/46/3/305
Popis:	From the experimental value for the fundamental twisting-frequency in ethylene, the magnitude of a certain carbon-carbon exchange integral J is determined as 0.72 ± 0.10 electron-volts. According to this result, the energy needed to twist one of the CH2 groups through an angle π/2 with respect to the other about the C-C axis is 1.0 ± 0.2. This agrees well with the experimental value for the heat of activation of dimethyl maleate to dimethyl fumarate.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e4052e6f23dc482976dc6e1e92a9406a https://doi.org/10.1088/0959-5309/46/3/305 Zobrazit plný text záznamu