Abstract
Two new proton transfer salts (HABT)+(SA)− (1) and (HABT)+2(ADSA)2−·2H2O (2) were synthesized from the reaction of benzo[d]thiazol-2-amine (2-aminobenzothiazole) (ABT) with 2-hydroxybenzoic acid (salicylic acid) (HSA) and 2-aminobenzene-1,4-disulfonic acid (H2ADSA), respectively. The molecular structures of these salts were carried out by elemental analysis, X-ray diffraction crystallography, FTIR and UV–Vis techniques Single-crystal X-ray analysis of the compounds revealed proton transfer from acidic moieties to basic moieties to form salts with intermolecular hydrogen bond motifs R22(8) for 1 and R33(10) for 2. The intramolecular hydrogen bond creates the cyclic S(6) motif in both structures (1 and 2). For salt 1, crystallization took place in the P2(1)/c space group of the monoclinic system, and for salt 2 in the P-1 space group of the triclinic system. The antibacterial and antifungal properties of the compounds are assayed against various Gram positive bacteria {Bacillus subtilis, Listeria monocytogenes (ATCC 7644), Enterococcus faecalis (ATCC 29212), Staphylococcus aureus (NRRL B-767)}, Gram negative bacteria {Escherichia coli (ATCC 25922), Pseudomonas aeruginosa (ATCC 27853)} and fungus {Candida albicans (F89)}. Minimum inhibitory concentrations (MIC) of synthesized salts were compared with antibacterial (levofloxacin cefepime, vancomycin) and antifungal (Fluconazole) reference compounds.
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CCDC 2178935 (1) and CCDC 2178938 (2) contain the supplementary crystallographic data for this paper. These data can be obtained free of charge via http://www.ccdc.cam.ac.uk (the Cambridge Crystallographic Data Centre, 12 Union Road, Cambridge CB2 1EZ, UK; fax (+ 44 1123 336 033; e.mail: deposit@ccdc.cam.ac.uk or http://www.ccdc.cam.ac.uk). The authors declare that all other data supporting the findings of this study are available within the article and its supplementary information files.
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Acknowledgements
The authors acknowledge to Scientific and Technological Research Application and Research Center, Sinop University, Turkey, for the use of the Bruker D8-QUEST diffractometer.
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We thank to Kütahya Dumlupınar University Research Foundation (Project No: 2021-42) for providing support for this study.
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Büyükkıdan, N., İlki̇men, H., Kaya, S. et al. Two New Proton Transfer Salts of Benzo[d]thiazol-2-amine with Different Aromatic Acids. J Chem Crystallogr 53, 336–344 (2023). https://doi.org/10.1007/s10870-022-00974-w
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DOI: https://doi.org/10.1007/s10870-022-00974-w