Abstract
Three rare earth metal supramolecular complexes, {[Tb(L 2 )4](ClO4)3⋅2H2O(1), [Eu(L 2 )2(H2O)5] (ClO4)3(2) and [Gd(NO3)3(L 2 )2] ⋅2CH3 CH 2OH(3) (L 2 = 3-Dimethylamino-1-pyridin-2-yl-propenone), have been synthesized and characterized by elemental analysis, IR and single crystal X-ray diffraction. The crystal structure analysis reveals that the coordination numbers of three complexes (1–3) are 8, 9 and 10, respectively. Three complexes assembled into 3D frameworks based on C-H ⋯O, O-H ⋯O hydrogen bond linkages. Three rare earth metal supramolecular complexes, {[Tb(L 2 )4](ClO4)3⋅2H2O(1)[Eu((L 2 )2(H2O)5](ClO4)3(2) and [Gd(NO3)3((L 2 )2]⋅2CH3CH2OH(3) ((L 2=3-Dimethylamino-1-pyridin-2-yl-propenone), have been synthesized and characterized. The crystal structure analysis reveals that the coordination numbers are 8, 9 and 10, respectively. These complexes assembled into 3D hydrogen-bonding frameworks based on C-H···O, O-H···O linkages.
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