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摘要
Two saccharinate salts (6-bromobenzo[d]thiazol-2-amine):(saccharin):H2O [(HL1)(+)center dot(sac)(-)center dot H2O, L1 = 6-bromobenzo[d]thiazol-2-amine, (sac)(-) = saccharinate] (1), and (5,7-dimethyl-1,8-naphthyridine-2-amine):(saccharin) [(HL2)(+)center dot(sac)(-), L2 = 5,7-dimethyl-1,8-naphthyridine-2-amine] (2) were prepared and structurally characterized by X-ray crystallography. Salt 1 crystallizes in the triclinic, space group P-1, with a = 7.5523(5) , b = 8.6498(7) , c = 12.7907(12) , alpha = 99.646(2), beta = 90.6500(10)A degrees, gamma A = 97.165(2), V = 816.87(11) (3), Z = 2. Compound 2 crystallizes in the monoclinic, space group P2(1)/c, with a = 8.4237(12) , b = 8.0539(11) , c = 24.966(2) , alpha = 90A degrees, beta = 90.5340(10)A degrees, gamma A = 90A degrees, V = 1693.7(4) (3), Z = 4. The different hydrogen bonding interaction modes of the saccharinate anions and the cations lead to 3D network structure, and 3D ABAB layer structure for 1, and 2, respectively. Despite variations in the aromatic organic bases, there existed strong intermolecular N-H center dot center dot center dot N, and N-H center dot center dot center dot O(carbonyl) hydrogen bonds in both compounds. At the next level, the aromatic C-H proton interacts with the sulfonyl O atom. Compound 1 bears Br-O, and pi-pi interactions, there are CH3-O, and CH-N interactions in 2. These interactions are responsible for the high-yielding supramolecular assembly of 2-aminoheterocyclic compounds and the saccharine into salts.
Due to the collective weak interactions, the complexes displayed 3D structure.
