MOLECULAR COCRYSTALS OF CARBOXYLIC-ACIDS - XXXII - THE CRYSTAL-STRUCTURES OF THE ADDUCTS OF 2-AMINOBENZOTHIAZOLE WITH 3,5-DINITROBENZOIC ACID (ADDUCT HYDRATE) AND 3-AMINOBENZOIC ACID, AND 2-AMINO-2-THIAZOLINE WITH 2-AMINOBENZOIC ACID

Two adducts of 2-aminobenzothiazole and one of 2-amino-2-thiazoline wi th aromatic carboxylic acids have been synthesized and their X-ray cry stal. structures determined. These are 2-aminobenzothiazole with 3,5-d initrobenzoic acid (the 1:1 adduct hydrate) (1), and 3-aminobenzoic ac id (1:1) (2), and 2-amino-2-thiazoline with 2-aminobenzoic acid (1:1) (3). Compound (1) is a non-centrosymmetric proton-transfer complex and gave a signal of 0.30 relative to urea when tested for second-order n on-linear optical properties. Compound (3) is also a proton-transfer c omplex but (2) is not.