A series of pure inorganic eight-connected self-catenated network based on Silverton-type polyoxometalate

In this paper, three pure inorganic eight-connected self-catenated networks based on the Silverton-type polyoxometalate [CeMo12O42](8) with lanthanide, transition metal and alkali metal cations as linkers: [Li(H2O)(4)](2)Co(H2O)(4)Ce(H2O)(3)[CeMo12O42]center dot 3H(2)O (1), H-0.5[Li(H2O)(4)](2.5)[Ni(H2O)(4)](0.5)Ce(H2O)(3)[CeMo12O42]center dot 3H(2)O (2) and H[Li(H2O)(4)](3)Ce(H2O)(3)[CeMo12O42]center dot 3H(2)O (3) have been successfully synthesized and characterized by elemental analysis, IR spectroscopy, thermal gravimetric analysis, X-ray photoelectron spectroscopy, electrochemical analyses and single crystal X-ray diffraction, The single crystal X-ray diffraction analyses reveal that compounds 1-3 are isostructural. The [(CeMo12O42)-Mo-IV](8) polyoxoanions are connected by Ce4+ to form the infinite I D chains. And then the parallel stacking chains linked by transition metal cations and lithium ions construct to an eight-connected self-catenated 4(24)56(3) topology framework. (C) 2008 Elsevier Inc. All rights reserved.