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.
Highlights
Chemical contextTransition-metal complexes containing amine or its derivative ligands have attracted considerable attention owing to their diverse coordination geometries and their various applications in catalysis (Ahn et al, 2017), as magnetic materials (Liu, Zhou et al, 2017) and fluorescent substances (Chia & Tay, 2014) as well as sensing materials (Liu, Wang et al, 2017)
The title compound, [Cu(NO3)2(C10H16N2O)], has been synthesized and characterized by synchrotron single-crystal diffraction at 100 K
Weak intermolecular C—HÁ Á ÁO interactions are observed in the sheet and between adjacent sheets
Summary
Transition-metal complexes containing amine or its derivative ligands have attracted considerable attention owing to their diverse coordination geometries and their various applications in catalysis (Ahn et al, 2017), as magnetic materials (Liu, Zhou et al, 2017) and fluorescent substances (Chia & Tay, 2014) as well as sensing materials (Liu, Wang et al, 2017). Polyamine ligands containing hydroxyl groups can form multinuclear complexes (such as dinuclear or trinuclear) with various transition-metal ions and hydrogenbonded supramolecular compounds due to the deprotonation of hydroxyl groups by the transition-metal ions and anions (Shin et al, 2014). N-(2-pyridylmethyl)iminodiethanol and N-(2-pyridylmethyl)iminodiisopropanol ligands containing amine, pyridine and hydroxyl groups have been used to form trinuclear metal complexes with cobalt and nickel ions, respectively, and these complexes have shown significant olefin epoxidations and magnetic interactions (Shin, Jeong et al, 2016). The nitrate anion is a good candidate for the construction of multinuclear complexes or supramolecular compounds by bridging metal ions or hydrogen bonding adjacent molecules (El-Khatib et al, 2018). Symmetry codes: (i) x; y; z þ 1; (ii) Àx þ 32; y þ 12; z À 12; (iii) x À 12; Ày þ 32; z; (iv) Àx þ 32; y þ 12; z þ 12
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