Metal−organic frameworks (MOFs) which are inorganic-organic hybrid porous materials, prepared from metal ions/clusters and multidentate organic ligands have evolved to be the next generation utility materials because of their usability in diverse applications. [1] MOFs as a class of interesting materials have attracted great attention due to their controllable pore size and elaborately designed pore structure. In the past two decades, MOFs have exhibited versatile potential applications such as gas storage, gas separation, heterocatalysis, sensors, and luminescence. [2] Most of the research so far are focused on MOFs based on transition metal ions or rare-earth ions. However, the main group alkaline earth metals are receiving increasing attention, recently. [3] In this review, A porous Ba(II)-based MOF was synthesized by Ultrasonic method using benzene-1,2,4,5-tetracaboxylic acid, as an organic linker; which was characterized by X-Ray Diffraction, Fourier Transform Infrared spectroscopy and Scanning Electron Microscopy.