Heteroligand zinc(II) and copper(II) complexes with naphthylacetic acid and monoethanolamine: Syntheses and crystal structures

New heteroligand Cu(II) and Zn(II) complexes with the alpha-naphthylacetic acid anion (NAA) and monoethanolamine (MEA), [M(NAA)(2)(MEA)(2)] (M = Cu2+, (I), Zn2+ (II)), are synthesized. The crystal structures of the obtained complexes are determined by X-ray diffraction analysis (CIF files CCDC 984097 (I) and 930946 (II)). The crystals are monoclinic, for I: a = 18.8140(9) , b = 4.82500(14) , c = 16.0360(7) , beta = 115.135(6)A degrees, V = 1317.87(11) (3), space group P2(1)/c, Z = 2; for II: a = 32.9760(14) , b = 5.0911(3) , c = 15.7994(10) , beta = 94.418(5)A degrees, V = 2644.6(3) (3), space group C2/c, Z = 4. In the structure of complex I, the Cu2+ ion arranged in the symmetry center is coordinated at the vertices of the distorted octahedron by the oxygen atoms of two NAA molecules (Cu-O(2) 2.019(4) ) and two MEA molecules. The latter is the bidentate-chelating ligand and coordinates the metal through the O and N atoms to form the five-membered metallocycle (Cu-O(3) 2.457(5), Cu-N(1) 1.986(5) ). In complex II, the Zn atom (on axis 2) is coordinated at the vertices of the distorted tetrahedron by the oxygen atoms of two NAA molecules (Zn-O(2) 1.976(4) ) and the nitrogen atoms of two MEA molecules (Zn-N 2.034(6) ). The character of the interaction of coordinated NAA and MEA ligands and methods for packing complexes I and II are considered on the basis of the structural data.