Zn(II) and Cd(II) Complexes Extended Structures Sustained by Hydrogen Bonding, π–π and C–H···π Interactions

Abstract

Two new complexes [Zn(sal)2(tpt)]·H2O(1), [Cd(sal)2(tpt)(H2O)]·H2O(2), have been obtained through ligands tpt and Hsal, where Hsal is salicylic acid and tpt is 2,4,6-tripyridyl-1,3,5-triazine, reacting with Zn(II) and Cd(II) salts. Their structures are fully characterized by IR spectroscopy, elemental analysis, single crystal X-ray diffraction. In complex 1, Zn(II) is coordinated by three N atoms and two O atom with a distorted square pyramidal coordination geometry. In 2, Each Cd(II) atom is seven-coordinated with a distorted pentagonal bipyramidal coordination geometry. The structural differences between two complexes show the influence of the coordinating orientation of metal ions. These two mononuclear complexes are further extended into three-dimensional structure via π–π, C–H···π and hydrogen bonding interactions. The solid state luminescent properties of complex 1, 2 are also reported. Two complexes, [Zn(sal)2(tpt)]·H2O(1), [Cd(sal)2(tpt)(H2O)]·H2O(2) have been prepared, and were characterized by elemental analysis, FT-IR and single-crystal X-ray diffraction. Structures indicate that exhibit that two complexes are single molecule structures. Two complexes are further extended into three-dimensional structure via π–π, C–H···π and hydrogen bonding interactions.