2016. 57, 6 – UDC 548.73:541.49:546.77 SYNTHESIS AND CHARACTERIZATION OF A PURE INORGANIC 3D NETWORK BASED ON THE [Sr2P9HMo12O71]20– CLUSTER AND STRONTIUM(II) LINKERS M.M. Ftini Laboratoire de matйriaux et cristallochimie (LMC), Facultй des sciences Monastir, Tunisie E-mail: mohamedmongi@yahoo.fr Received April 18, 2015 Novel supramolecular networks based on an anionic polymolybdophosphate cluster Sr10(H2O)12[Sr2P9HMo12O71] is hydrothermally synthesized and structurally characterized by single crystal X-ray diffraction, thermogravimetric analysis, infrared, ultraviolet spectroscopy, and cyclic voltammetry in an aqueous solution. <...> The compound is made up of unusual shaped-cage [Sr2P9HMo12O71]20. <...> The strontium cations are divided in two kinds. <...> The first occupy vacant sites in the [P9Mo12O68]n– polyoxoanions unit and the second [Sr(H2O)6]2+, [Sr(H2O)4]2+, and [Sr(H2O)2]2+ serve to bridge together the adjacent polymolybdophosphate clusters to yield unprecedented three-dimensional pure inorganic assemblies of the shaped-cage polymolybdophosphate clusters. <...> INTRODUCTION Polyoxometalate (POM)-based organic-inorganic hybrid compounds have attracted great interest in recent years because of their theoretical and practical applications in catalysis, molecular adsorption, medicine, electroconductivity, magnetism, and photochemistry [ 1—22]. <...> As was indicated by Zubieta, polyoxomolybdate anions, which have oxygen-rich compositions can be used as building blocks to construct the structure of new materials having secondary transition metal complexes and/or organic ligands as linkers [23—26 ]. <...> The cluster can be divided into two fragments. <...> The first is a tetra-vacant, lacunary derivative from the Wells—Dawson [P2Mo14] heteropolymolyb© Ftini M.M., 2016 . 1219 – 1225 1220 M.M. FTINI date fragment forming the basket body. <...> Our aim was, firstly, to synthesize new supramolecular materials based on giant non-classical polymolybdophosphate clusters using simple molybdate as the starting materials and strontium cations as linkers under hydrothermal conditions and changing the pH value and, secondly, to participate in the expanding field of investigation. <...> Herein, we report the hydrothermal synthesis and single X-ray diffraction of the supramolecular material based, to our knowledge, on the first example of the [Sr2HP9Mo12O71] shaped-cage cluster. <...> The infrared (IR), thermogravimetric analysis <...>