Preparation and Physical Investigation of Complexes Derived from 4-Dimethylaminobenzaldehyde and 4-Aminoantipyrine Schiff Base with Ni(II), Cu(II), Rh(III), and Pt(IV) Ions

Four new Schiff base complexes derived from Ni(II), Cu(II), Rh(III), and Pt(IV) with 4- dimethylaminobenzaldehyde and 4-aminoantipyrine were prepared and investigated using some elemental analysis such as molar conductivity measurements, thermogravimetric analysis, magnetic moments, infrared, electronic and mass spectra. The elemental analysis for C, H, and N showed the formation of 1:1[M:L] complexes. The molar conductivity measurements revealed that the complexes are nonelectrolyte in nature. The thermogravimetric analysis data exhibited the presence of coordinated and hydrated water molecules. The magnetic moment results showed paramagnetic phenomena for nickel and copper complexes and diamagnetic phenomena for Rhodium and platinum complexes. The infrared spectral data of the prepared complexes displayed the proper coordination sites of the present Schiff base towards the metal ions. The electronic absorption spectral data of the prepared complexes confirmed the electronic transitions and the chemical structures. The mass spectra of the free Schiff base and its complex with Rh(III) exhibited an interesting fragmentations.