Open AccessCRYSTAL STRUCTURE OF PICRIAFELTARRAGENIN EPOXY COMPOUND
Author(s) -
Fusen Han,
QiTai Zheng,
Fan Hai-Fu
Publication year - 1981
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.30.1141
Subject(s) - diffractometer , crystal structure , molecule , epoxy , crystallography , materials science , crystal (programming language) , diagonal , physics , mathematics , chemistry , composite material , geometry , computer science , quantum mechanics , programming language
Single crystals of picriafeltarragenin epoxy compound, C30H44O6, belong to space group P(212121) with lattice parameters a =28.373 (9)?, b=10.667 (5)?, c = 9.115 (4)? and 4 molecules in the unit cell. The intensities of 2890 independent reflectionsau collected using the PW-1100 fourcircle diffractometer. The structure was solved with MULTAN 78 program and refined to a final R = 0.084 by block diagonal least square method. Positions of all the hydrogen atoms were obtained from the difference Fourier synthesis. The shortest distance between two molecules is 3.5?.