Facile one pot synthesis of tetraamide macrocyclic complexes using malonyldihydrazide and p-nitrobenzaldehyde at room temperature

Facile one pot synthesis of a series of seven tetraamide macrocyclic complexes of first row transition metal ions such as Cr(III), Mn(II), Fe(III), Co(II), Ni(II), Cu(II) and Zn(II) is carried out using malonyldihydrazide and p-nitrobenzaldehyde at room temperature using template method. The characterization and structure determination of synthesized complexes was carried out using various analytical techniques such as melting point determination, IR, UV/Visible, 1H NMR, Mass spectra, magnetic susceptibility and molar conductance measurements. The results obtained indicated towards the presence of an octahedral geometry of the complexes. The synthesized complexes were screened for their antibacterial activities.