Premium
X‐ray crystal structure analysis of parthenin–A sesquiterpene lactone
Author(s) -
Gupta Vivek K.,
Goswami K. N.,
Bhutani K. K.
Publication year - 1994
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170290317
Subject(s) - tetragonal crystal system , crystal structure , sesquiterpene lactone , ring (chemistry) , hydrogen bond , lactone , molecule , crystallography , chemistry , sesquiterpene , stereochemistry , crystal (programming language) , envelope (radar) , cyclohexane conformation , organic chemistry , telecommunications , radar , computer science , programming language
Abstract The crystal structure of parthenin has been determined by X‐ray structure analysis. The compound crystallizes in the tetragonal space group P4 1 with cell parameters a = b = 6.8677(2), c = 28.6851(4) Å. The structure has been solved by direct methods and refined to R = 0.039. The seven‐membered ring assumes a chair conformation while the two five‐membered rings have envelope shapes. The A/B and B/C junctions are trans. Molecules are held together by hydrogen bonds.