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Crystal structure of 3-pheny1-5-chloro-7-bromoisoxazolo[4,5-d]pyrimidine

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Abstract

The crystal and molecular structure of 3-phenyl-5-chloro-7-bromoisoxazolo-[4,5-d] pyrimidine, C11H5BrClN3O, has been determined by X-ray techniques, and refined by Fourier and least-squares methods toR = 0·102 for 689 observed reflexions. The compound crystallizes in the orthorombic system:a = 15·72(4),b = 10·65(3),c = 6·72(3) Å,Z = 4, space groupPnam. The molecules lie on mirror planes, and all interatomic distances and angles within the molecule have reasonable values.

Close molecular packing exists in layers (corresponding to crystallographic mirror planes) stacked normal toc.

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Authors and Affiliations

  1. Istituto di Chimica Generale, Università degli Studi, Pavia, Italy

    Bruna Bovio & Stelio Locchi

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  1. Bruna Bovio
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  2. Stelio Locchi
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Bovio, B., Locchi, S. Crystal structure of 3-pheny1-5-chloro-7-bromoisoxazolo[4,5-d]pyrimidine. Journal of Crystal and Molecular Structure 2, 251–257 (1972). https://doi.org/10.1007/BF01246642

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  • DOI: https://doi.org/10.1007/BF01246642

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