CRYSTAL-STRUCTURES OF ATO-3-HYDROXYPROPYLSALICYLALDIMINATOPYRIDINECOPPER AND 3-HYDROXYPROPYLSALICYLALDIMINATOCOPPER

The crystal structures of nitrato-3-hydroxypropylsalicylaldiminatocopp er(II) (I) and 3-hydroxypropylsalicylaldiminatocopper(II) (II) are rep orted. The crystals are. monoclinic. The unit-cell parameters are a = 10.201(6), b = 11.048(5), and c = 15.161(6) Angstrom; gamma = 90.11(5) degrees; Z = 4; and sp. gr. P2(1)/n for I and a = 10.190(6), b = 8.992 (6), and c = 10.800(7) Angstrom; gamma = 73.54(7)degrees; Z = 4; and s p. gr. P2(1)/a for II. In I, the coordination polyhedron of the centra l atom is a strongly distorted tetragonal bipyramid. Its base is forme d of the imino N atom, the phenol O atom of azomethine, the pyridine N atom, and an O atom of the nitrate group. Another O atom of the acid residue occupies one of the axial vertices of the pyramid; the sixth c oordination site is occupied by the alcohol O atom. Crystal II is buil t of centrosymmetric dimers. The Cu atom is situated nearly at the cen ter of a distorted square, whose three vertices are occupied by the im ino N atom and the phenol and alcohol O atoms of the ligand, and the f ourth vertex is filled by the alcohol O atom of an adjacent complex.