Open AccessTHE CRYSTAL STRUCTURE OF (Z)-l-BROMO-2-(p-CHLOROPHENYL)-l,2-DI(p-METHOXYPHENYL)-ETHYLENE
Author(s) -
Bao Guang-Hong,
Chao Xu,
Cun-Heng He
Publication year - 1982
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.31.820
Subject(s) - monoclinic crystal system , bromine , hydrogen , hydrogen atom , crystal structure , atom (system on chip) , crystallography , ethylene , materials science , crystal (programming language) , group (periodic table) , physics , atomic physics , chemistry , organic chemistry , quantum mechanics , metallurgy , embedded system , computer science , programming language , catalysis
This compound (C22H18O2ClBr) is monoclinic, with space group P21/n and α = 19.502(10)?, b = 9.118(5)?, c = 11.233(6)?, β = 88.18(1)?. The structure was determined by MULTAN-80. First, the bromine atom was located on the .E-map and the remaining 26 non-hydrogen atoms were determined by weighted Fourier synthesis. The atomic parameters were refined isotropically and anisotropically for two cycles respectively, then all the hydrogen atoms were located in the subsequent difference synthesis. Full matix least square refinement was made with the non-hydrogen atoms anisotropically and hydrogen atoms isotropically, to a final discrepency factor of R = 0.0776.