Abstract
The reaction of 2-pyridinecarbaldehyde with N-(2-aminoethyl)propane-1,3-diamine in a 2 : 1 molar ratio under microwave irradiation gave 2-(2-(pyridin-2-yl)-tetrahydropyrimidin-1(2H)-yl)-N- (pyridin-2-ylmethylene)ethanamine (L) as a mixture with the isomer 3-(2-(pyridin-2-yl)imidazolidin- 1-yl)-N-(pyridin-2-ylmethylene)propan-1-amine (L*). The molecules were characterized by elemental analyses and spectroscopic methods. Percentages of L and L* were evaluated through integration of selected 1H NMR signals. The cadmium iodide complex of L, [Cd(L)I2]·H2O (1), was prepared and identified by elemental analysis, FT-IR, Raman, and 1H NMR spectroscopy, and single-crystal X-ray diffraction. In the crystal structure of 1 the cadmium atom with four coordinated nitrogen atoms and two iodide ions has a distorted octahedral geometry. A water molecule is also incorporated in the crystal network. Several hydrogen bonds including N-H···O, C-H···O, C-H···I, and O-H···I interactions are present in the crystal structure of 1.
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