Metal–carbon bond metal-organic frameworks with permanent porosity

The main coordinate bonds used in constructing metal-organic frameworks (MOFs) are metal–nitrogen (M–N), metal–oxygen (M–O), and metal–sulfur (M–S) bonds, but the metal–carbon (M–C) bonds are yet to be used as the linkages. Here, two iso-reticular crystalline MOFs connected by M–C bonds are reported. Combining various characterization methods, the structures of the two M–C bond MOFs (MC-MOFs) were investigated. MC-MOFs both exhibit three-dimensional (3D) rigid skeletons with uniform one-dimensional (1D) channels, and the specific areas are 640 and 960 m2 g−1, respectively. More interestingly, the two MC-MOFs are semiconductive, presenting potentials as photoelectric materials or photocatalysts.