Preparation, spectral characterization, crystal structure, thermal analysis and Hirshfeld surface analysis of the complex [Co(H2O)3(SCN)2(C5H8N2)]-3(C8H10N4O2),1.25H2O

Abstract

The complex of the [Co(H2O)3(SCN)2(C5H8N2)]-3(C8H10N4O2),1.25H2O has been prepared in the water-ethanol solution at room temperature and characterized by single crystal and powder X-ray diffraction analysis, UV–Visible, Infrared spectroscopies and thermal analysis (TGA and DTA). This complex is crystallized in the monoclinic system with C 2/c space group. The unit cell parameters are a = 27.6240(11) Å, b = 17.6694(7) Å, c = 16.6504(6) Å and β = 92.5713(15)°. The Co(II) ion is octahedral coordinated by three oxygen atoms of the coordinated water molecules, three nitrogen of thiocyanato ligands and one molecule of 2-Aminopyridine leading to an overall CoO3N3 coordination. Beside π-π interactions, the intermolecular hydrogen bonds (OH⋯N, OH⋯O, NH⋯O, CH⋯S and NH⋯S) together play a vital role in stabilizing of the crystal packing. Hirshfeld surface analysis and two-dimensional fingerprint plots have been used to determine the percentage of interactions involved in the formation of the crystal packing.