ABSTRACT: The title Schiff base complex, [ZnI(2)(C(16)H(24)N(2)O(2))], is a mononuclear zinc(II) compound. The Zn atom is four-coordinated in a distorted tetra-hedral geometry by one phenolate O atom and one imine N atom of the Schiff base ligand and by two iodide ions. In the crystal structure, mol-ecules are linked through inter-molecular N-H⋯O hydrogen bonds, forming chains running along the a axis.
Project description:The asymmetric unit of the title compound, [ZnBr(2)(C(14)H(20)N(2)O)]·H(2)O, consists of a mononuclear Schiff base zinc(II) complex mol-ecule and a solvent water mol-ecule. The Zn(II) atom is four-coordinated in an approximately tetra-hedral geometry, binding to the imine N and phenolate O atoms of the neutral zwitterionic Schiff base ligand and to two terminal Br(-) anions. In the crystal structure, mol-ecules are linked through inter-molecular O-H?Br and O-H?O hydrogen bonds, forming chains running along the b axis.
Project description:The title complex, [Zn(NCS)(C(13)H(20)N(2)O(2))(2)]NO(3), consists of a complex mononuclear Zn(II) cation and a nitrate counter-anion. The Zn(II) ion is five-coordinate in a trigonal-bipyramidal geometry. The thio-cyanate N atom and two O atoms from two Schiff bases define the equatorial plane, and the two imine N atoms from the same two Schiff bases occupy the axial positions, with an N-Zn-N angle of 175.98?(7)°. The amine N atoms of the Schiff base ligands are protonated and are not involved in the coordination to the metal. The dihedral angle between the two substituted benzene rings is 87.7?(2)°. The nitrate counter-ions are linked to the cations through N-H?O hydrogen bonds.
Project description:In the mononuclear title complex, [Ni(NCS)(2)(C(14)H(22)N(2)O(2))(2)], the Ni atom lies on an inversion centre. It is chelated by the phenolate O and imine N atoms from two zwitterionic Schiff base ligands, and is also coordinated by the N atoms from two thio-cyanate ligands, giving a slightly distorted octa-hedral geometry. Intra-molecular N-H⋯O and N-H⋯N hydrogen bonds are observed.
Project description:In the title compound, [Zn(NCS)(C(12)H(18)N(2)O(2))(2)]NO(3), the Zn(II) ion is chelated by the phenolate O and imine N atoms from two zwitterionic Schiff base ligands and is also coordinated by the N atom of a thio-cyanate ligand, giving a distorted trigonal-bipyramidal geometry. Intra-molecular N-H?O hydrogen bonds are observed in the complex cation. The nitrate anions are linked to the complex cations through N-H?O hydrogen bonds.
Project description:The title compound, [Cu2(C9H10NO2)4], is built of discrete centrosymmetric dimers. The Cu(II) atoms are each five coordinated by two deprotonated Schiff base ligands that are bonded differently to the metal atoms. Of the two phenolate O atoms, one is coordinated to one Cu(II) atom, whereas another bridges the two metal atoms. The basal plane of the square pyramid around Cu(II) atoms is formed by the imino N and phenolate O atoms of the bidentate and the monodentate/bidentate Schiff base ligands. The bridging phenolate oxygen occupies the apical position of the coordination sphere with a considerably longer Cu-O bond length. In the crystal, the dimeric mol-ecules pack relative to each other in such a way that the Cu2O2 planes of adjacent dimers are orthogonal.
Project description:In the title complex, [Ni(C(11)H(16)N(3)O)]Cl·2H(2)O, the Ni(II) ion is coordinated within a distorted square-planar environment. In the crystal, inter-molecular N-H?Cl, N-H?O, O-H?O, O-H?Cl and weak C-H?O hydrogen bonds link the components into a two-dimensional network parallel to (001).
Project description:The asymmetric unit of the title compound, [Cu(C(13)H(20)N(2)O(2))(2)](NCS)(2), contains one half-dication, located on an inversion center, and one thio-cyanate anion. Each Cu(II) atom is four-coordinated by two phenolate O and two imine N atoms from two symmetry-related Schiff base 2-{[2-(isopropyl-aza-nium-yl)eth-yl]imino-meth-yl}-6-meth-oxy-phenolate (L) ligands in a distorted square-planar geometry. The ammonium groups are involved in the formation of N-H⋯O and N-H⋯N hydrogen bonds, which link one dication and two anions into an electroneutral cluster. When very weak Cu-N interactions with a distance of 2.910 (5) Å between the metal and the thiocyanate anions in apical positions are considered, the secondary coordination polyhedron is a very elongated CuN(4)O(2) octahedron.
Project description:In the title thio-cyanate-bridged polynuclear copper(II) complex, [Cu(C(10)H(12)NO(3))(NCS)](n), the Cu atom is five-coordinated in a square-pyramidal geometry, with one phenolato O, one imino N and one hy-droxy O atom of a Schiff base ligand and one thio-cyanato N atom defining the basal plane, and with one thio-cyanato S atom occupying the apical position. In the crystal structure, pairs of adjacent complex mol-ecules are linked through inter-molecular O-H⋯O hydrogen bonds into dimers. The dimers are further linked via Cu⋯S inter-actions, forming two-dimensional layers parallel to the bc plane.
Project description:The title mononuclear zinc(II) complex, [Zn(C(11)H(16)N(2)O(2))(2)(NCS)]NCS·0.5H(2)O, consists of a complex cation, a thio-cyanate anion, and half of a water mol-ecule. The Zn(II) atom in the cation is five-coordinated by two imine N and two phenolate O atoms from two bidentate Schiff base ligands, and by one N atom of a thio-cyanate ligand, forming a distorted trigonal-bipyramidal geometry. The ammonio H atoms are involved in hydrogen bonding with the ligand O atoms and the solvent water molecules (site occupation factor 0.5), which partially determines the conformation of the ligands.
Project description:In the title complex, [ZnI(2)(C(14)H(21)BrN(2)O)]·CH(3)OH, the asymmetric unit consists of a mononuclear zinc(II) complex mol-ecule and a methanol solvent mol-ecule. The compound was derived from the zwitterionic form of the Schiff base 4-bromo-2-[3-(diethyl-amino)propyl-imino-meth-yl]phenol. The Zn(II) atom is four-coordinated by the imine N and phenolate O atoms of the Schiff base ligand and by two iodide ions in a distorted tetra-hedral coordination. In the crystal structure, the methanol mol-ecules are linked to the Schiff base mol-ecules through N-H?O and O-H?O hydrogen bonds. One I atom is disordered over two positions in a 0.702?(19):0.298?(19) ratio.