Synthesis of a new complexes of Mn(II), Cd(II) and Zn(II) metals with the interaction of asymmetrical amine

Schiff s bases play a significant role in the development of chewing chemistry by forming stable complexes with most intermediate metals. During our journey with coordination chemistry for last several years, we have frequently encountered very interesting consequences whenever we use N-(2-aminoethyl) piperazine to make Schiff-bases. In most of the cases terminal nitrogen atom of the piperazine moiety gets protonated. In this work an unexpected condensation between the uncoordinated NH piperazine fragment with 2-pyridinecarboxaldehyde was detected. In this work we report the synthesis and characterization of new Mn(II), Cd(II) and Zn(II)complexes have been prepared via the Mn(II), Cd(II) and Zn(II)with an asymmetrical amine N1-Pyridin-2-ylmethyl-N1-[2-(4-pyridin-2-ylmethyl-piperazin-1-yl)-ethyl]-ethane-1,2-diamine,. The complexes have been characterized by elemental analysis, IR , H NMR. And X-ray crystal Mn(II) complex structure(fig. 1).[1,2]