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An isopolyoxomolybdate-based POM is coordinated to trivalent cerium ions to afford a hybrid complex namely, [Ce(dmso)8][Ce(η2-NO3)2(dmso)4(α-Mo8O26)0.5][Mo6O19]. The original electrostatic environment created around the Ce(III) by its coordination to the isopolyoxomolybdate core induces complex single-molecule magnet behavior.

International audienceTwo organic–inorganic compounds based on Keggin anions and lanthanide ions have been synthesized. Their chemical formulae are [Eu(C2H6SO)8][PMo12O40] (1) and [Er(C2H6SO)8][PMo12O40]·2(C2H6SO)·1/2H2O (2), respectively. They have been structurally characterized by single-crystal X-ray diffraction, IR, thermal analyses and cyclic voltammetry measurements. 1 and 2 crystallize in the space groups View the MathML sourceP1¯ and P21/c, respectively. Their catalytic activity toward organic dyes is quite sizeable since the target removal after 120 min is about 78.6% in the presence of the system [Eu(C2H6SO)8][PMo12O40]/H2O2 and 60.3% in the presence of the system [Er(C2H6SO)8][PMo12O40]·2(C2H6SO)·1/2H2O/H2O2

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