Elaboration, structural, thermal and vibrational studies of two new cadmium hybrid compounds: [Cd(OH)]2[O2C(CH2)2CO2], and [Cd3(OH)2][O2C(CH2)2CO2]2

Two new cadmium hybrid inorganic-organic compounds have been hydrothermally prepared and structurally characterized using single-crystal X-ray diffraction. [Cd(OH)]2[O2C(CH2)2CO2] ([CD1]) is Monoclinic P21/c, a=10.12(2)Å, b=5.554(5)Å, c=6.134(3)Å, β=96.24(8)° and z=2. [Cd3(OH)2][O2C(CH2)2CO2]2 ([CD2]) is Orthorhombic Pcca, a=10.657(2)Å, b=6.8610(3)Å, c=16.949(3)Å, and z=4. Both [CD1] and [CD2] have bi-dimensional inorganic networks pillared by carbon atoms of the succinate anions. [CD1] inorganic moiety is composed of a double layer of equivalent CdO6 octahedra sharing corners or edges. Smoothly corrugated mono-layers of CdO6 octahedra sharing corners or edges are present in the [CD2] inorganic moiety. Thermal as well IR spectroscopic studies are also presented. These hybrid compounds are stable up to 400 °C under air flow.