Hydrothermal synthesis and structural characterization of a network oxide constructed from {Mo12O34(O3AsC6H5)4}4− clusters and {Cu(terpy)}2+ subunits

The hydrothermal reaction of MoO3, [Cu(CH3CO2)2] · H2O, 2,2′:6′,2″-terpyridine (terpy), H2O3AsC6H5, H2O and H2SO4 yields aqua colored crystals of [{Cu(terpy)}2Mo12O34(O3AsC6H5)4] · 2.25H2O (1 · 2.25H2O). The two-dimensional structure of 1 is constructed from {Mo12O34(O3AsC6H5)4}4− clusters linked through {Cu(terpy)}2+ subunits. Each Cu(II) site exhibits {CuN3O2} coordination geometry and links two adjacent clusters. In turn, each cluster is associated with four Cu(II) sites through {MoO · Cu} interactions.