Syntheses, Structure, and Properties of Several Biscopper(II)-Amine Adducts

Article abstract of DOI:10.1246/bcsj.56.2241

The crystal and molecular structure of tetrakis<(isopropylthio)acetato>bis(quinoline)dicopper(II) (1), bis(dibenzylamine)bis<(ethylthio)acetato>copper(II) (2), and bis<(isopropylthio)acetato>tris(isoquinoline)copper(II) (3) were determined by the X-ray diffraction method.The final R values obtained are 0.041, 0.055, and 0.078 for 1, 2, and 3 respectively. 1 is green in color and is orthorhombic with the space group Pcab.It has a dimer structure similar to that of the copper(II) acetate hydrate, where four (alkylthio)acetate ligands bridge both copper(II) atoms. 2 is violet in color and is monoclinic with the space group A2/a.It has a square-palnar geometry, and no atoms are coordinated to the copper(II) atom from the axial direction, probably because of the steric effect of the large dibenzylamine molecules. 3 is blue in color is triclinic with the space group P<*>.It has potentially a hepta-coordinate geometry, where one nitrogen atom and two oxygen atoms ligate from the axial direction of the CuN2O2 plane.