B. Vijayalakshmi, R. Srinivasan
Apr 15, 1975
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Influential Citations
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Journal
Acta Crystallographica Section B Structural Crystallography and Crystal Chemistry
Abstract
DL-Tryptophan ethyl ester hydrochloride, C 13 H I6 N 2 0 2 .HCI, is triclinic, space group PI, with a=15.85, b=8.73, c=5.35A, α=82.73, β=88.51, γ=106.33°, Z=2. The structure was solved by the heavy-atom method and refined by block-diagonal least-squares calculations to an R of 0.089 for 2012 observed reflexions. The indole ring plane forms an angle of 61.5° with the carboxylate plane. The D and L molecules are linked by N-H···Cl hydrogen bonds around the centre of symmetry. The hydrogen bonds sandwich the molecules into a double-layered system parallel to the bc plane.