Synthesis, X-ray Structure, Hirshfeld Analysis of Biologically Active Mn(II) Pincer Complexes Based on s-Triazine Ligands
Department of Chemistry, Faculty of Science, Alexandria University, P.O. Box 426, Ibrahimia, Alexandria 21321, Egypt
Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
Authors to whom correspondence should be addressed.
Crystals 2020, 10(10), 931; https://doi.org/10.3390/cryst10100931
Received: 20 September 2020 / Revised: 7 October 2020 / Accepted: 12 October 2020 / Published: 13 October 2020
Herein, the synthesis and antimicrobial activities of [Mn(MorphBPT)(H2O)2NO3]NO3; (1) and [Mn(PipBPT)(H2O)2NO3]NO3; (2) complexes of the pincer-type tridentate ligands MorphBPT; 4-(4,6-di(1H-pyrazol-1-yl)-1,3,5-triazin-2-yl)morpholine and PipBPT; 2-(piperidin-1-yl)-4,6-di(1H-pyrazol-1-yl)-1,3,5-triazine are presented. Both complexes have slightly distorted octahedral coordination geometry. Their molecular packing depends on O–H···O, C–H···O hydrogen bonds and anion–π stacking contacts. Hirshfeld analysis was used to quantify the different contacts. Both complexes exhibited better anti-fungal activity than the standard Fluconazole and comparable antibacterial activity to Gentamycin against Staphylococcus aureus and Escherichia coli microbes. Moreover, complexes 1 and 2 are biologically more active than the free ligands against these microbes.