Spectroscopic Characterization, Thermogravimetry and Biological Studies of Ru(III), Pt(IV), Au(III) Complexes with Sulfamethoxazole Drug Ligand

Abstract

Complexes of Ru(III), Pt(IV), and Au(III) with sulfamethoxazole (SMX) were experimentally produced. The resulted formations of novel metal complexes were discussed using several techniques, such as effective magnetic moment molar conductivity, IR, UV, and 1H NMR spectra, elemental analyses, thermal analysis, microscopic and XRD analyses. The X-ray diffraction patterns of the solid powders of the synthesized sulfamethoxazole complexes indicated their identical formulation. The surface uniformity of the complexes’ samples was confirmed by SEM images. These complexes appear as spots, dark in appearance, with particle sizes of 100–200 nanometers in transmission electron microscopy (TEM) pictures. The sulfamethoxazole ligand was shown to be bidentate coordinated to the metallic ions with sulfonyle oxygen and amido nitrogen groups, according to IR spectral data. Both Ru(III) and Au(III) complexes have an electrolytic nature, but the Pt(IV) complex has non-electrolytic properties. TG and DTG experiments proved the assigned composition and provided information regarding the thermal stability of complexes in a dynamic air atmosphere, according to the thermal analysis. The effect of the novel prepared complexes was examined for antibacterial and antifungal activity in vitro against a variety of pathogens, and they exceeded the sulfamethoxazole ligand in antibacterial activity. It was observed that the Pt(IV) complex has the ultimate activity versus all the assessed organisms relative to all compounds.

Antibacterial, antibiofilm, and antioxidant activities of two novel metal–organic frameworks (MOFs) based on 4,6-diamino-2-pyrimidinethiol with Zn and Co metal ions as coordination polymers

“…These may arise from the oxidation–reduction process of Co ions within the MOF centers, leading to the oxidation of sulfur in half of the MOF structural molecule. 52 The Zn-MOF and Co-MOF demonstrate significant M–O stretching bands, resulting from the asymmetric and symmetric vibrations of water molecules bonded to the metal ions. These vibrations cause slight frequency shifts owing to conjugation with the carbon–nitrogen bond.…”

Synthesis, Structural, Morphological Characterization, and Cytotoxicity Assays of Metal Complexes Decorated SiO2 Nanoparticles Against Breast Cancer Cell Lines (MDA-MB-231)

“…[PtL] Electronic spectrum of the prepared behavior dark yellow Pt (IV) complex Fig. 4 showed four bands at 98135,2777,32879 and 45248 cm -1 which are assigned to the transitions 1 A1g →, 3 T1g, 1 A1g → 1 T1g, 1 A1g → 1 T2g and (L) → Pt (C.T) respectively 19 . The magnetic moment of the present complex is (0.0 B.M) of the present pit(IV) complex (d 6 ) configuration agrees with the octahedral configuration, this result indicates a diamagnetic.…”