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New supramolecular ferrocenyl phenylguanidines as potent antimicrobial and DNA-binding agents

Six new ferrocenyl phenylguanidines have been synthesized and characterized by elemental analysis, FT-IR, multinuclear (1H and 13C) NMR, and single crystal analysis. The latter showed a supramolecular structure for 2 mediated by O H and π H interactions. A subsequent DNA-binding study of these complexes proved them to be good DNA binders with the binding constant varying in the range of 1.2–5.6 × 105 M−1. These compounds were found to have moderate antibacterial and significant antifungal activities, especially for compounds having a chlorophenyl. These compounds may emerge as a new class of anticancer and antifungal agents alone or in combination with other drugs.