A new
![]()
-Keggin POM derivative
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(
rong>1rong>) (DF = 4,5-diazafluoren-9-one) has been prepared under hydrothermal conditions and characterized by single-crystal X-ray diffraction, elemental analysis, IR, XPS spectra, thermogravimetric analysis and cyclic voltammetry. In compound
rong>1rong>, the polyoxoanion cluster
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is decorated by a single capping {Cu(DF)}
2+ subunit
via four bridging oxygen atoms on a {Mo
4O
4} pit. The isolated copper dimer unit
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acts as counter cation, in which the organic ligand DF exhibits a rare coordination mode. Furthermore, the capped Keggin polyoxoanions
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are fused together
via the copper dimers through the weak Cu
![]()
O interactions to form chains. Hybrid
rong>1rong> was used as a solid bulk modifier to fabricate a carbon paste electrode (
rong>1rong>-CPE) by direct mixing. The electrochemical and electrocatalytic behaviors of the
rong>1rong>-CPE have been studied in detail.