Nowadays the laboratory synthesis of Metal-Organic Frameworks (MOFs) has been the objective of many synthetic chemists. Interest to these materials is actual due to their considerable porosity, inherent surface area and versatility in properties. MOFs have wide applications in areas such as storage of gases, solar energy, biomedicine, heterogeneous catalysis, etc. We have synthesized a new coordination polymer based on 3,3',5,5'-tetrakis(4carboxyphenyl)-2,2',4,4',6,6'-hexamethyl-1,1'-biphenyl ligand (H4L) (Fig.1). The complex [MnL] (1) were synthesized under solvothermal conditions and have been characterized by IR spectroscopy, thermogravimetry and by single-crystal X-ray diffraction. It was found that the 3,3',5,5'-tetrakis(4-carboxyphenyl)-2,2',4,4',6,6'-hexamethyl-1,1'-biphenyl ligandmanifests as a tetradentate ligand and in deprotonated form L4^– coordinates four manganese (II) atoms to form a three dimensional coordination polymer (3D) (Fig. 2) in cavities of which the DMF molecules are positioned. In order to assess the robustness of the coordination architecture of the compound a thermogravimetric (TG) analysis was performed on the crystalline material. The thermal behavior of coordination polymers 1 demonstrates its high thermal stability.Figure 1. 3,3',5,5'-tetracarboxylmesitil acidFigure 2. Manganese coordination polymer [Mn-L] (1)