Preparation, characterization and H2 storage capacity of newly Mn(II), Co(II), Ni(II), Cu(II) and Zn(II) mixed ligand complexes of paracetamol and saccharine

Abstract

The study includes the synthesis of new paracetamol- (Par) and saccharine- (Sac) containing complexes with the elements; Mn (II), Co (II), Ni (II), Cu (II), Zn (II). These complexes are characterized by elemental analysis (C.H.N), molar conductivity, electronic spectra (UV-Vis), Fourier transform infrared spectroscopy (FTIR), nuclear magnetic resonance (1H-NMR) and magnetic susceptibility. Based on these measurements, complexes are found to be in the type [M(Par)2(Sac)2(H2O)2]; where M (Ni) II, Co (II), Cu (II), Zn (II), Mn (II) with octahedral geometries. Furthermore, the results demonstrate that both Par and Sac ligands act as mono-dentate ligands through oxygen and nitrogen respectively. Additionally, the susceptibility of a Cu complex to hydrogen uptake was examined after its surface area was investigated by measuring nitrogen adsorption-desorption isotherm. The result proved that this material has good storage capacity but under high pressure.