[Cd(mpdc)]: A novel five-connected 3-D zeolite-like framework with intersecting helical chains in diamondoid net of CdII (mpdc = 2,6-dimethylpyridine-3,5-dicarboxylate)

Under hydrothermal conditions, a novel five-connected three-dimensional metal-organic coordination polymer [Cd(mpdc)] is self-assembled from 2,6-dimethylpyridine-3,5-dicarboxylate (mpdc), by taking advantage of simple modifications of pyridyldicarboxylates, and cadmium ions. The X-ray single diffraction reveals that the [Cd(mpdc)] with M5L5 mode exhibits zeolite-like framework with interesting helical chains in diamondoid net of CdII. In addition, the compound with high thermal stability up to the temperature of 430 °C exhibits strong photoluminescent at room temperature in the solid state.