CRYSTAL STRUCTURE OF О±-(N-BENZOXAZOLINE-2-ONE) ACETIC ACID HYDRATE, SOLVATE, AND SALTS
J. M. Ashurov1, N. S. Mukhamedov2, B. Tashkhodzhaev2, B. T. Ibragimov1
1Sadykov Institute of Bioorganic Chemistry, Academy of Sciences of the Republic of Uzbekistan, Tashkent, Republic of Uzbekistan
2Yunusov Institute of the Chemistry of Plant Substances, Academy of Sciences of the Republic of Uzbekistan, Tashkent, Republic of Uzbekistan
Keywords: производные бензоксазолин-2-она, сольватополиморфизм, РСА, benzoxazoline-2-one derivatives, solvatopolymorphism, single crystal X-ray diffraction (XRD)
Abstract
The crystal structure of α-(N-benzoxazoline-2-one) acetic acid is studied in the following forms: hydrate, solvate with formic acid, organic monoethanolammonium salt (NН2(CH2)2OH) in two polymorphs produced by minor changes in the crystallization temperature, and also its ethylenediammonium salt (NН2(CH2)2NH2) in the 2:1 ratio, where amino groups participate in the deprotonation of two molecules of α-(N-benzoxazoline-2-one) acetic acid. Weak intermolecular hydrogen and dative bonds in the crystals consisting of different molecules are analyzed.
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