Three-dimensional metal-organic framework based on pentanuclear manganese clusters as building blocks.

A rare 3-D Mn–organic framework, [(CH3)2NH2]3[Mn5(btc)4(Ac)(H2O)4]·5H2O (1), based on pentanuclear manganese clusters as building blocks has been prepared and structurally characterized by EA, IR, TGA, PXRD, and single-crystal X-ray diffraction. Structural analysis indicates the pentanuclear manganese cluster in1has a bow-like configuration, which is the first found to act as secondary building unit in the field of metal–organic framework. Gas adsorption measurements reveal that1can absorb a considerable amount of N2and CO2. [ABSTRACT FROM AUTHOR]