A Microporous Metal-Organic Framework Supramolecularly Assembled from a Cu Dodecaborate Cluster Complex for Selective Gas Separation.

A novel 3D metal-organic framework BSF-1 based on the closo-dodecaborate cluster [B H ] was readily prepared at room temperature by supramolecular assembly of CuB H and 1,2-bis(4-pyridyl)acetylene. The permanent microporous structure was studied by X-ray crystallography, powder X-ray diffraction, IR spectroscopy, thermogravimetric analysis, and gas sorption. The experimental and theoretical study of the gas sorption behavior of BSF-1 for N , C H , C H , CO , C H , C H , and CH indicated excellent separation selectivities for C H /CH , C H /CH , and C H /CH as well as moderately high separation selectivities for C H /C H , C H /CO , and CO /CH . Moreover, the practical separation performance of C H /CH and C H /CH was confirmed by dynamic breakthrough experiments. The good cyclability and high water/thermal stability render it suitable for real industrial applications.