The preparation and investigation of iron coordination compounds have attracted great interest due to their unique electronic and magnetic properties. In continue of our research on the construction of perspective molecular magnetic materials [1, 2] a new two-layered oxo-bridged dinuclear compound [Fe2(µ2-O)(is)2(tpt)2(H2O)2](NO3)2 (1) (where His = isobutyric acid; tpt = 2,4,6-tris(2pyridyl)-s-triazine) has been prepared from the reaction of µ3-oxo trinuclear Fe(III) isobutyrate [Fe3O(is)6(H2O)3]NO3∙2(CH3CN)∙2(H2O) with tpt ligand in acetonitrile and characterized by elemental analysis, IR spectroscopy, and thermogravimetric studies.  Single-crystal X-ray diffraction analysis showed that 1 crystalizes in the monoclinic space group P21/n and consists of oxo-bridged [Fe(is)(tpt)(H2O)2+ units that are parallel to each other and located into an opposite direction (Fig. 1) and two NO3 anions. The Fe···Fe distance in 1 is 3.549 Å, and Feµ2-O distances are 1.775 Å. The angle of Feµ2-OFe is 180°. Each FeIII atom is heptacoordinated and has a N3O4 coordination environment by two O atoms from chelating isobutyrate, three N atoms from tpt ligand, one O atom from an aqua ligand and one bridging O atom. The FeN distances range from 2.021 to 2.089 Å, and FeO distances are in the range of 1.775 - 2.164 Å. The presence of aqua ligand in 1 leads to the formation of intermolecular OH∙∙∙O hydrogen bonds between dinuclear cations and NO3 anions that connect adjacent clusters in layers (Fig. 2).   Acknowledgments. This research was supported by the DAAD (O. I. B.), SCOPES  IZ3Z0_152404/1 and State Program of R. Moldova (Project 16.00353.50.05A)