Optical Separation of Racemic Phenyl-alanine,and Structure of Complex Consisting of R-Phenylalanine and R-Mandelic Acid

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.

作 者： 胡自強 徐端鈞 徐元植 吳景云 蔣燕南   作者單位： 胡自強,徐端鈞,徐元植(Department of Chemistry,Zhejiang University,Hangzhou 310027,China)

吳景云,蔣燕南(Department of Chemistry,National Sun Yat-Sen University,Kaohsiung,China) 

刊 名： 結構化學  ISTIC SCI PKU 英文刊名： CHINESE JOURNAL OF STRUCTURAL CHEMISTRY  年，卷(期)： 2004 23(1)  分類號： O641  關鍵詞： optical separation   crystal structure   mandelic acid   phenylalanine