Hydrothermal syntheses,crystal structures and thermal stability of two divalent metal phosphonates with a layered and a 3D structure |
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| Abstract: | Two new divalent metal phosphonates, Cu2{CH3C(OH)(PO3)2}(H2O)2]?·?0.5H2O (1) and NH3CH2CH2NH3]Zn3{CH3C(OH)(PO3)2}2(H2O)]?·?H2O (2), have been hydrothermally synthesized and characterized by single-crystal X-ray diffraction as well as with infrared spectroscopy, elemental analysis and thermogravimetric analysis. The structure of 1 comprises Cu3(hedp)2]2? layers connected by CuO4] units to form a 3D open-framework structure with a one-dimensional channel system along the b axis. In 2, the connections of alternately arranged ZnO4] tetrahedra, ZnO6] octahedra and CPO3] tetrahedra via vertex-sharing result in a 2D layered structure. The protonated ethylenediamine cations and water molecules are located between adjacent layers. |
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| Keywords: | Metal phosphonates Crystal structure Hydrothermal synthesis Copper(II) Zinc(II) |
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