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Studies in molecular structure, symmetry and conformation XII: Crystal and molecular structure of D-alloisoleucine

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Abstract

The crystal structure of D-alloisoleucine has been determined using three-dimensional photographic data. The crystals are monoclinic:P21,Z= 4,a= 9.76 °,b= 5.33 Å,c=14.26 Å and β = 98.6 °. The structure was solved by packing considerations on the basis of the structure of L-isoleucine and refined by full-matrix least-squares, including anisotropic thermal parameters for all nonhydrogen atoms, to anR-factor of 0.118 for 1057 observed reflections. The two molecules in the asymmetric unit have different conformations as in the case of L-isoleucine.

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Authors and Affiliations

  1. Centre of Advanced Study in Physics, University of Madras, 600025, Madras, India

    K. I. Varughese & R. Srinivasan

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  1. K. I. Varughese
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  2. R. Srinivasan
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Contribution No. 403 from Centre of Advanced Study in Physics, University of Madras, Madras, India.

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Varughese, K.I., Srinivasan, R. Studies in molecular structure, symmetry and conformation XII: Crystal and molecular structure of D-alloisoleucine. Journal of Crystal and Molecular Structure 5, 317–328 (1975). https://doi.org/10.1007/BF01270620

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