Abstract
The molecular-crystal structure of 1-dimethylamino-4-chlorophthalazine was investigated by means of x-ray diffraction analysis. The dimethylamino group is turned about the Cr−N bond at an angle of 33.4 ° from the position that is optimal for its conjugation with the ring, and the nitrogen atom has a flattened trigonal-pyramidal conformation (the sum of the angles is 346.9 °); this is in agreement with NMR data on the low barrier to its rotation about the Cr−N bond.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 7, pp. 977–981, July, 1982.
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Litvinov, I.A., Struchkov, Y.T., Bystrykh, N.N. et al. Structure of 1-dimethylamino-4-chlorophthalazine. Chem Heterocycl Compd 18, 749–753 (1982). https://doi.org/10.1007/BF00568957
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DOI: https://doi.org/10.1007/BF00568957