Crystal structure, Hirshfeld surface analysis and physicochemical studies of two new Cu(II) complexes with the ligand 2-amino-6-methylpyrimidin-4-(1H)-one (original) (raw)

2020, Inorganica Chimica Acta

The chemical preparation, crystal structure and spectroscopic characterization of two new Cu(II) complexes [Cu(ampymo)4](O2CMe)2, ( 1 ) and [Cu(C5H7N3O)2(H2O)3](CH3COO)2, [Cu(ampymo)2(H2O)3](O2CMe)2, ( 2 ) with the monodentate ligand 2-amino-6-methylpyrimidin-4-(1H)-one, (ampymo), are reported. In ( 1 ), the Cu(II) atom is four-coordinated, in a square planar fashion, by nitrogen atoms of four ampymo ligands. In ( 2 ), it is five-coordinated in a square pyramidal fashion by two pyrimidine nitrogen atoms and three water oxygen atoms. The crystal structure of ( 1 ) is stabilized by N H⋯O hydrogen bonds with pillars of the cationic complexes alternating with channels occupied by the acetate anions. In the atomic arrangement of ( 2 ), the complex cations are located parallel to the (a, b) plane between which the acetate anions intercalate by establishing hydrogen bonds with these cations to form a tridimensional network. The vibrational absorption bands were identified by infrared spect...