The aim of this work was the synthesis,  determination of the composition, structure, and sorption properties of Co(II) MOFs using rigide ligands.  There we report a method of solvothermal synthesis of Co(II) complex using 1,3,5-tris(4-carboxyphenyl)benzene acid (CFB) and bis-imidazolyl-bis-phenylene (BIBPh) as starting ligands. The synthesized product represents a tridimensional polymeric compound of formula {Co3O(OH)(1,3,5-CFB)2(DMF)2(H2O)3}∞. The composition and structure of complex was demonstrated by various methods of analyses (EA, IR, thermogravimetry, single crystal X-ray). Thermogravimetric  study has demonstrated, that heating of polymeric sample up to  250 °C leads solely to elimination of solvent molecules from micropores.  The degassed compound is stable up to 360 °C, then a process of irreversible destruction of molecular carcass is occuring.  Single crystal X-ray structure  investigation of coordination compound {Co O(OH)(1,3,5-CFB) } has demonstrated, that in the crystalline phase an unusual polymeric structure was obtained, where trinuclear groups {µ-O-Co3(II)OH} are interconnected by bridging  molecules of hexadentate ligand 1,3,5-CFB. In polymer are present two types of large cavities where solvent molecules of H O and DMF are adsorbed. figureFig. 1. Crystal structure (left) and molecular packing (right) of the polymeric compound {Co3O(OH)(1,3,5-CFB)2(DMF)2(H2O)3}∞.  Sorption properties have been tested through N2 adsorption at 273 0K and shown a maximum sorptio value ~110 cm3/g.  The surface area (SBET = ~330 m2/g) is relatively moderate comparing with known highest values.