Template Synthesis of Hybrid Schiff Base Complexes of Zn2+, Cd2+, and Hg2+ Ions

Abstract

Five Schiff base complexes of d¹⁰ metals were prepared via Template synthesis procedure. This procedure included the synthesis and isolation of intermediate diamine complexes derived from N,N-Diethylethylenediamine; (Et₂ne), and appropriate metal salt; MCl_2; (M= Zn²⁺, Cd²⁺, and Hg²⁺), followed by the condensation of either of Ortho-phathaldehyde (OPA) or Benzaldehyde with different intermediate diamine complexes of aforementioned metal ions. Moreover, the condensation reaction of the intermediate diamine complexes of the formula [HgCl₂ (Et₂ne) ₂] with OPA failed to produce either the corresponding Schiff base – Mercury- or Organo - Mercury Complex. The identification of the reported Schiff base Metal complexes were  based on Elemental Analyses, Atomic Absorption; FT-IR, Vis-UV; and Molar Conductance. In addition to those techniques, ¹H NMR and Mass Spec. were recorded for a couple of the reported complexes.

Keywords: Template synthesis, Hybride Schiff Base, Schiff base-d¹⁰ metal complexes, Reduction of mercury diamine complex, N,N-Diethylethylenediamine,  Benzaldehyde, o- Phathaldehyde.