Hydrothermal synthesis and characterization of a new hybrid organic-inorganic compound [Cd(en)3]MoO4

A new hybrid organic-inorganic compound [Cd(en)3]MoO4 was prepared from the hydrothermal reaction of (NH4)6Mo7O24·4H2O, CdCl2·2.5H2O, H2C2O4, ethylenediamine and H2O at 120 °C. The compound crystallizes in the trigonal system, space group P3¯c1 with a=16.2087(14) Å, c=9.8816(17) Å, V=2248.3(5) Å3, Z=6 and R1=0.0240 for 1627 observed reflections. Single crystal X-ray diffraction revealed that the structure is composed of MoO42− anions and [Cd(en)3]2+ complex cations, which are held together into a three-dimensional network via hydrogen-bonding interactions. The [Cd(en)3]2+ cations in the crystal structure exhibit two configurations, Λ(δδδ) and Δ(λλλ), as a pair of enantiomers due to the D3d symmetry. Other characterizations by elemental analysis, IR and thermal analysis are also described.