An open metal-organic framework based on Cu3-triad triangular units and templated by double Wells-Dawson anions

► A beautiful 3D metal organic framework with mango-like 1D channels is constructed from Cu3-triad triangular unit. ► The first example of trinuclear triangular CuII-trz unit-based MOFs with Dawson-type polyoxoanions as a double-template. ► The electrochemical behavior is also studied.