CRYSTAL STRUCTURE OF α-(N-BENZOXAZOLINE-2-ONE) ACETIC ACID HYDRATE, SOLVATE, AND SALTS
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 (NН<sub>2</sub>(CH<sub>2</sub>)<sub>2</sub>OH) in two polymorphs produced by minor changes in the crystallization temperature, and also its ethylenediammonium salt (NН<sub>2</sub>(CH<sub>2</sub>)<sub>2</sub>NH<sub>2</sub>) 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.