Synthesis and structure of Cu(II) complex with chiral amidate ligand, 4(S)-1-(2-pyridyl)-3-oxo-4-aza-7-thiaoctane

A polymeric compound, [Cu(S-metamp)(H2O)(NO3)] (1) [S-metamp (=4(S)-1-(2-pyridyl)-3-oxo-4-aza-7-thiaoctane)] was prepared and characterized by X-ray crystallography. Crystal data for 1 monoclinic, P21, a=7.7799(7) Å, b=20.613(2) Å, c=9.815(1) Å, β=90.287(8), V=1573.9(3) Å3, Z=4 and R=0.0306. In 1, the coordination geometry around Cu(II) ion is distorted square-pyramidal with an oxygen atom from nitrate at the apex, and three nitrogen atoms from S-metamp and an oxygen from aqua ligand in a plane. The two hydrogen atoms of the coordinated water molecule interact with the oxygen atom of nitrate and amide oxygen atom by hydrogen bonding in the solid state. The combination of this gives a structural feature in a 2D polymeric arrangement.