An unprecedented 3D/3D hetero-interpenetrated MOF built from two different nodes, chemical composition, and topology of networks

An exceptional acentric MOF material with two-fold hetero-interpenetrated nets consisting of a 3D diamond network (mononuclear Cd(CO2)(4) node) and a 3D CsCl framework (trinuclear Cd-3(CO2)(8) node) has been constructed, which contains 6-, 7-, 8-coordinated Cd2+ ions and shows a high thermal stability (>420 degrees C) and SHG activity.