One-pot synthesis of a novel supramolecular compound based on three kinds of Keggin polyoxoanions PMo12O403 − with different coordination modes

A novel supramolecular compound based on three kinds of Keggin polyoxoanions PMo12O403 − with different coordination modes [(phen)4Cu2(PMo12O40)][(phen)2Cu (PMo12O40)]2[PMo12O40][(phen)2Cu(H2O)]2·4H2O (1), has been hydrothermally prepared and characterized by elemental analysis, IR, TG, XRD and single-crystal X-ray diffraction. Compound 1 is composed of one [(phen)4Cu2(PMo12O40)]+ cation, two [(phen)2Cu(PMo12O40)]− anions, one [PMo12O40]3 − anion, two [(phen)2Cu(H2O)]2 + cations and four lattice water molecules, generating an interesting three-dimensional supramolecular framework via supramolecular interactions, in which there are three kinds of Keggin polyoxoanions PMo12O403 − with different coordination modes. To the best of our knowledge, the title compound represents the first example of a structure containing three kinds of Keggin POMs with different coordination modes up to now. Its electrochemical and electrocatalysis behavior have been investigated in detail.

A novel supramolecular compound based on three kinds of PMo12O403 − with different coordination modes [(phen)4Cu2(PMo12O40)][(phen)2Cu (PMo12O40)]2[PMo12O40][(phen)2Cu(H2O)]2·4H2O (1), is reported for the first time. It proves the feasibility of the coexistence of three kinds of PMo12O403 − in one compound. Furthermore, 1-CPE displays good redox properties and electrocatalytic activity to reduce H2O2.Figure optionsDownload as PowerPoint slideHighlights
► A new supramolecular compound based on three kinds of PMo12O403 − is first reported.
► 1-CPE displays unique redox property and good electrocatalytic activity.
► It provides useful prototype for design and synthesis of new compound.