结构化学
結構化學
결구화학
CHINESE JOURNAL OF STRUCTURAL CHEMISTRY
2004年
1期
38-40
,共3页
胡自强%徐端钧%徐元植%吴景云%蒋燕南
鬍自彊%徐耑鈞%徐元植%吳景雲%蔣燕南
호자강%서단균%서원식%오경운%장연남
optical separation%crystal structure%mandelic acid%phenylalanine
The racemic phenylalanine has been separated by (R)-mandelic acid through the formation of diastereomeric molecular complex. The crystal of the title chiral complex (C8H8O3·C9H11NO2, Mr = 317.33) belongs to monoclinic, space group C2 with a = 19.391(3), b = 5.715(4), c = 15.755(3)A,β= 115.23(1)°, V = 1579(1) A3, Z = 4, Dc = 1.335 g/cm3, F(000) = 672, μ= 0.099 mm-1, R = 0.033 and Wr = 0.060 for 1278 observed reflections (I > 2σ(I)). The complex consists of (R)-mandelic acid and (R)-phenylalanine in 1:1 molar ratio, and the complex molecules form layered crystal structure by self-assembly through intermolecular H-bonding between carboxyl and carboxylate of the neighboring molecules.
