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Two‐component molecular crystals from N‐heteroaromatics and nitro­benzoic acids
Authors:Daisuke Hashizume  Masataka Iegaki  Masanori Yasui  Fujiko Iwasaki  Jiben Meng  Zhong Wen  Teruo Matsuura
Abstract:Five two‐component molecular crystals, benzimidazolium 3‐nitro­benzoate, C7H7N2+·C7H4NO4?, (I), benzimidazolium 4‐nitro­benzoate, C7H7N2+·C7H4NO4?, (II), 1H‐benzotriazole–3‐nitro­benzoic acid (1/1), C6H5N3·C7H5NO4, (III), imidazol­ium 3‐nitro­benzoate, C3H5N2+·C7H4NO4?, (IV), and imid­azolium 4‐nitro­benzoate, C3H5N2+·C7H4NO4?, (V), were prepared with the aim of making chiral crystals. Only (I) crystallizes in a chiral space group. The mol­ecules of (I) and (II) are linked by hydrogen bonds to form 21 spiral chains. In (III), (IV) and (V), macrocyclic structures are formed from two acid and two base components, by an alternate arrangement of the acid and base moieties.
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