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In this research, two new complexes of N-(2-aminoethyl)-1,3-propanediamine (aepn), (Cd(aepn)2)I2 (1) and (Cd(aepn)2)Cl2 · H2O (2), were prepared and identified by elemental analysis, FT-IR, Raman spectroscopy and single-crystal X- ray diffraction. Geometry around the cadmium atom in two complexes by coordination of six nitrogen atoms of two aepn is distorted octahedral. If distortion in the mer-(Cd(aepn)2) 2+ cation is disregarded, it has a C2 axis and C2 symmetry. The cyclic voltammetry experiments were carried out to study the complexation process. Two structural surveys on coordination modes and complexes of aepn are presented. A study was carried out using CSD data to estimate the averages of bond lengths for dif- ferent types of the CdN bonds. It was found that the intermolecular N-H···I, C-H···I hydrogen bonds in 1 and N-H···Cl, N- H···O, C-H···O, O-H···Cl in 2 stabilized the crystal networks.

journal of the korean chemical society

Spectral and Geometrical Study of Two Cadmium Complexes, mer-R,S-[Cd(aepn)2]X2(X: I-, Cl-, aepn: N-(2-Aminoethyl)-1,3-propanediamine) Supported by Solution Experiments