The present invention relates to a porous metal organic framework comprising a bidentate organic compound coordinated to a metal ion selected from the group of metals consisting of Al, Fe and Cr, with the bidentate organic compound being derived from a dicarboxylic acid, wherein the framework has a structure whose projection along [001] has a pattern in which each side of a hexagon is bounded by a triangle. The present invention further relates to shaped bodies and a process for preparing the porous metal organic framework and its use.