Open AccessDETERMINATION OF 3, 4-METHYLENEDIOXY-BENZOYL PICOLINE CRYSTAL STRUCTURE
Author(s) -
千金子,
古元新,
郑朝德,
郑启泰
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.30.418
Subject(s) - diffractometer , van der waals force , crystal structure , molecule , crystal (programming language) , crystallography , materials science , physics , chemistry , quantum mechanics , computer science , programming language
3, 4-METHYLBNEDIOXY-BENZOYL PICOLINE crystal belongs to mono-clinic system. The space group is C2k5-P21/c with four formula units in a cell of dimension a = 10.381(2)?, b = 7.163(2)?, c = 16.951(3)?, β = 107.51 (5)°. The structure was solved by direct method (MULTAN-74). Eefinement of structure parameters was acheived by BLOCK-matrix least-squares method, R = 0.072 (for 2176 observed reflexions) .The intensity data were collected on PW-1100 four-circle diffractometer.All of the hydrogen atoms were located in the difference Fourier maps. The molecules are bound by the van der waals' force.