Synthesis and crystal structure determination of a new Nickel(ІІ) macrocyclic complex containing homopiperazine moiety

macrocyclic ligands have an excellent basis for the study of molecular recognition phenomena due to their cavity size, shape and donor atoms. Macrocyclic structurally reinforced by the inclusion of bridging groups within macrocyclic ring showes much greater rigidity than those its analogues [1]. We have already reported a number of macrocyclic Schiff base complexes containing piperazine and homopiperazine moieties [2]. In this work a new dialdehyde have prepaired by use of Mannich reaction method and related macrocyclic Schiff base ligands synthesised in the presence of 1,4-diamino butane(L1), and 1,3 diamino propane (L2). Their related complexes were obtained by using of perchlorate salts of Ni2+ and Co2+ .The aldehyde and ligands were investigated by elemental analysis ,IR spectroscopy ,1H and 13C NMR and related complexe were characterizated by elemental analysis , IR spectroscopy and X-ray spectroscopy in the case of NiL1.