Crystal structure of Dinatrato{2-methyl-2[(pyridine-2-ylmethyl)amino]propan-1-ol-N,N,O}copper (II) from synchrotron data

Abstract

The title compound, [Cu(NO3)2(C10H16N2O)], has been synthesized and characterized by synchrotron single-crystal diffraction at 100 K. The CuII ion has a distorted square-pyramidal coordination geometry with two N and one O atoms of the C10H16N2O ligand and one nitrate anion in the equatorial plane and another nitrate anion at the axial position. The equatorial Cu-N and Cu-O bond lengths are in the range 1.9608 (14)-2.0861 (15) Å, which are shorter than the axial Cu-Onitrate bond length [2.1259 (16) Å]. In the crystal, mol-ecules are linked via inter-molecular N-H⋯O and O-H⋯O hydrogen bonds, forming a sheet structure parallel to the bc plane. The sheets are further linked through a face-to-face π-π inter-action [centroid-centroid distance = 3.994 (1) Å]. Weak inter-molecular C-H⋯O inter-actions are also observed in the sheet and between adjacent sheets.