Abstract
Nanoparticles exhibit distinct physical and chemical characteristics and are becoming increasingly significant in the production of innovative nanodevices for many applications in physics, biology, biomedicine, and pharmaceuticals. The aim of this research work is to synthesize Fe (II) and Cu (II) nano-sized complexes of trimethoprim (TMP) using the sonication method, characterize them using physical and spectroscopic methods, and carry out ADMET studies on the synthesized complexes. The spectroscopic and physical studies showed a change in colour and an increase in melting point due to coordination. The novel compounds were slightly soluble in water. The XRD tests revealed that the new nanocomplexes were crystalline. The Fe (II) nanocomplexes had a size of 57.56 nm and the Cu (II) nanocomplexes had a size of 69.88 nm. These values were found using Debye-Scherrer’s equation. The FTIR results of the TMP, Fe (II), and Cu (II) nanometal complexes showed a shift of the amino group band from 3317 to 3295 and 3202 cm?1 and the azomethine band from 1633 to 1625 and 1592 cm?1 in the complexes. In the complexes, the proton NMR spectra revealed an upfield shift of the amine proton. The carbon-13 NMR spectra showed that CH2 was involved in coordination with the metal ions. The spectra studies indicated that TMP coordinated with the metal ions through the methylene and amino groups. A trigonal bipyramid structure was proposed for the complexes. The results of the Rule of 5 studies indicated that the test compounds had a good drug-likeness prediction, with only one violation. The ADMET prediction showed that all of the compounds demonstrated improved pharmacokinetic characteristics and adhered to the RO5 requirement. These findings highlight the therapeutic potential of Fe (II) and Cu (II) nano-sized TMP complexes as bioactive compounds that warrant further investigation for pharmaceutical applications.
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