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Unit cell dimensions of some long chain fatty acid polymorphs
Author(s) -
Bailey A. V.,
Mitcham D.,
French A. D.,
Sumrell G.
Publication year - 1975
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/bf02672169
Subject(s) - arachidic acid , monoclinic crystal system , behenic acid , stearic acid , crystallography , chemistry , triclinic crystal system , unit (ring theory) , long chain , crystal (programming language) , polymorphism (computer science) , crystal structure , fatty acid , organic chemistry , palmitic acid , mathematics , biochemistry , gene , genotype , mathematics education , polymer science , computer science , programming language
Unit cell dimensions and space group assignments for several polymorphic fatty acids have been determined by using single‐crystal X‐ray precession photography. This technique is useful to distinguish the closely similar B‐ and E‐forms of stearic acid which have nearly identical crystal long spacings but significantly different unit cell dimensions and monoclinic angles. Other samples studied were the B‐form of arachidic and behenic acids and the unsaturated acids, trans ‐9‐octadecenoic and trans ‐5‐eicosenoic.