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Issue 7, 1990
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β-Diketone interactions. Part 11. The hydrogen-bonded adduct 4, 6-dimethylpyrimidin-2-one·urea (DMP·U) from the reaction of pentane-2,4-dione and urea

Abstract

The X-ray crystal Structure of the adduct formed between 4,6-dimethylpyrimidin-2-one and urea (DMP·U) shoes a compact unit joined through two N–H ⋯ O[double bond, length half m-dash]C hydrogen bonds. One of these is remarkably short with RN ⋯ O 2.735 Å(RH ⋯ O 1.705 Å), and is believed to be among the shortest example of an NHO hydrogen bond between neutral molecules. Its hydrogen-bond energy, estimated from IR data, is ca. 75 kJ mol–1

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Article type: Paper
DOI: 10.1039/P29900001077
Citation: J. Chem. Soc., Perkin Trans. 2, 1990,0, 1077-1080
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    β-Diketone interactions. Part 11. The hydrogen-bonded adduct 4, 6-dimethylpyrimidin-2-one·urea (DMP·U) from the reaction of pentane-2,4-dione and urea

    J. Emsley, L. Y. Y. Ma, M. B. Hursthouse, S. A. Karaulov and M. Motevalli, J. Chem. Soc., Perkin Trans. 2, 1990, 0, 1077
    DOI: 10.1039/P29900001077

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