Four fluorinated triphenylphosphine (PPh3)-based organic salts were synthesised from PPh3 and á,á’–dibromo-p-xylene by first producing quaternised salts, followed by anionic exchange with fluorinated anions, NaBF4, KPF6, CF3SO3Li and CF3COONa. This is the first reported synthesis of the trifluoromethyl sulphonate and the trifluoro acetate ionic salts with the 1,4-phenylenebis(methylene)bis(triphenylphosphonium) dication. The compounds were synthesised in yields of between 80-98% using simple techniques. The salts were characterized by 1H, 13C, 19F and 31P NMR, and IR spectroscopy. The organic salts showed significant activity against Staphylococcus aureus, Escherichia coli, Klebsiella pneumoniae, Salmonella typhi, Candida albicans, and Streptococcus pyogenes when compared with the activities of the standard antimicrobial chloramphenicol and antifungal nystatin.
Fluorinated phosphonium organic salts, Antimicrobial activity, Triphenylphosphine organic salts
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