A novel ruthenium-containing polyoxometalate-based organic-inorganic hybrid, K4Na9H7.4[(AsW9O33)4(WO2)4{Ru3.2(C3H3N2)2}]·42H2O (1) has been successfully synthesized by an one-step hydrothermal method under acidic condition, which applied self-assemble strategy between inorganic polyoxometalate based on trivacant...