Melting and Structure of Long-Chain Ketones

Autor:	Alfred Rene Jean Paul Ubbelohde, J. W. H. Oldham
Rok vydání:	1938
Předmět:	Crystallography Dipole Multidisciplinary Materials science Position (vector) Diagram Maximum difference Structure (category theory) Molecule Long chain
Zdroj:	Nature. 142:74-75
ISSN:	1476-4687 0028-0836
Popis:	A NUMBER of isomeric long-chain ketones have been prepared and specially purified, in the course of investigations on the solid-liquid transition in long-chain compounds1. As will be clear from the diagram for the ketones CnH2n + 1COC(16+n)H33−2n, the setting points depend in a remarkable way on the position of the CO dipole in the long-chain molecule. The maximum difference (between C8H17COC8H17 and C5H11COC11H23) of 9.2° may be compared with the difference in setting points between C5H11COC11H23 (s.p. 40.8°) and the corresponding paraffin C17H36 (s.p. 21.6°).
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::3cd51a173049447e54e5b5d85ee416a5 https://doi.org/10.1038/142074b0 Zobrazit plný text záznamu