Hydrothermal Syntheses and Crystal Structures of Two Novel, Hybrid Materials Based on Secondary Transition-Metal-Incorporated Polyoxovanadate Cluster Backbones: [Cd(dien)<sub>2</sub>]<sub>2</sub>[(dien)CdAs<sub>8</sub>V<sub>13</sub>O<sub>41</sub>(H<sub>2</sub>O)]·4H<sub>2</sub>O and [Cd(en)<sub>2</sub>]<sub>2</sub>[(en)<sub>2</sub>Cd<sub>2</sub>As<sub>8</sub>V<sub>12</sub>O<sub>40</sub>]
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Two new cadmium-substituted polyoxovanadates of [Cd(dien)2]2[(dien)CdAs8V13O41(H2O)]·4H2O (1) and [Cd(en)2]2[(en)2Cd2As8V12O40] (2), where dien is diethylenetriamine and en is ethylenediamine, have been hydrothermally synthesized and structurally characterized by elemental analyses, IR spectra, EPR spectra, XRD spectra, TG analyses, magnetic properties, and X-ray crystallography. Single-crystal X-ray diffraction analyses reveal that compounds 1 and 2 possess a discrete and 1D structure, respectively. The former contains an inorganic−organic hybrid monocadmium-substituted polyoxovanadate cluster unit that is derived from the well-known {As8V14O42} cluster, whereas the latter is composed of an inorganic−organic hybrid bicadmium-substituted polyoxovanadate cluster unit that is derived from the well-known {As8V12O40} cluster.
