Synthesis, structure, spectroscopic and DFT studies of zinc(II) and manganese(II) complexes of 2-pyridine carboxaldehyde-N-methyl-N-2-pyridyl hydrazone

Synthesis, characterization and crystal structures of complexes of 2-pyridine carboxaldehyde-N-methyl-N-2-pyridyl hydrazone (hereafter referred to as pamph) with zinc(II) [Zn(pamph)Cl2] (1), and manganese(II) [Mn(pamph)Cl2] (2), have been reported. In both 1 and 2, pamph is tridendate ligand and the complexes are penta coordinate with MN3Cl2 core. Further characterization using spectroscopic techniques was made. The experimental structures have been compared with the minimized structures obtained from DFT calculations. Structural and physical aspects of both compounds were analyzed thoroughly and discussed.

Graphical abstractThe synthesis, characterization, crystal structure and DFT calculations of Zn(II) and Mn(II) complexes of 2-pyridine carboxaldehyde-N-methyl-N-2-pyridyl hydrazone have been investigated. Comparison of theoretical and experimental geometrical results along with experimental and theoretical IR, 1H NMR, UV–Vis is also reported.Figure optionsDownload full-size imageDownload as PowerPoint slide