ABSTRACT: In the title compound, [Cu(C(13)H(13)Cl(2)NO(3))(C(3)H(7)NO)], the Cu(II) atom is coordinated in a slightly distorted square-planar geometry by two O atoms and one N atom from the tridentate chiral ligand 2-[(3,5-dichloro-2-oxidobenzyl-idene)amino]-3-methyl-penta-noate and by one O atom from dimethyl-formamide. In the crystal structure, the Cu atom forms contacts with Cl and O atoms of two units (Cu⋯Cl and Cu⋯O = 3.401 and 2.947 Å, respectively), thereby forming an approximately octa-hedral arrangement. A three-dimensional network is constructed through Cl⋯Cu, O⋯Cu, Cl⋯Cl contacts and C-H⋯O hydrogen bonds.
Project description:In the title complex, [Cu(C(16)H(11)Cl(2)NO(4))(C(3)H(7)NO)] , the Cu(II) atom is coordinated by two O atoms and one N atom from the tridentate ligand L(2-) {LH(2) = (2S)-[2-(3,5-dichloro-2-hydroxy-benzyl-idene)-imino]-3-(4-hydroxy-phenyl)propionic acid} and one O atom from a dimethyl-formamide mol-ecule, resulting in a slightly distorted square-planar geometry. The structure forms a one-dimensional chain through weak coordination bonds [Cu⋯O 3.080 (1), Cu⋯Cl 3.269 (1) Å] and a three-dimensional network through O-H⋯O and C-H⋯O hydrogen bonds.
Project description:The tridentate Schiff base ligand of the title complex, [V(C(15)H(12)N(2)O(4))O(C(12)H(8)N(2))]·C(3)H(7)NO, was derived from the condensation of 2-hy-droxy-1-naphthaldehyde and l-asparagine. The central V(IV) atom is six-coordinated by one oxide O atom, two N atoms from 1,10-phenanthroline and one N atom and two O atoms from the Schiff base ligand in a distorted octa-hedral geometry. In the crystal structure, inter-molecular N-H⋯O hydrogen bonds connect mol-ecules into centrosymmetric dimers. The C atoms of the dimethyl-formamide solvent mol-ecule are disordered over two sites with site-occupancy factors of 0.732 (13) and 0.268 (13).
Project description:In the mononuclear title compound, [Co(III)(C(15)H(12)N(2)O(3))(C(5)H(5)N)(3)]ClO(4), the Co(III) ion is coordinated by three pyridine mol-ecules and one N'-(3-meth-oxy-2-oxidobenzyl-idene)benzohydrazidate Schiff base ligand in an O,N,O'-tridentate manner. The Co(III) ion adopts a distorted CoN(4)O(2) octa-hedral coordination environment.
Project description:In the title compound, [Cu(C(2)O(4))(C(5)H(8)N(2))(2)(H(2)O)], the Cu(II) atom is coordinated in a slightly distorted square-pyramidal geometry by two N atoms belonging to the two 3,5-dimethyl-1H-pyrazole ligands, two O atoms of the oxalate anion providing an O,O'-chelating coordination mode, and an O atom of the water mol-ecule occupying the apical position. The crystal packing shows a well defined layer structure. Intra-layer connections are realised through a system of hydrogen bonds while the nature of the inter-layer inter-actions is completely hydro-phobic, including no hydrogen-bonding inter-actions.
Project description:In the title compound, [Ni(C(7)H(3)Cl(2)O(2))(2)(C(3)H(7)NO)(H(2)O)], the Ni(II) ion is coordinated by four O atoms from two bidentate 2,4-dichloro-6-formyl-phenolate ligands, one O atom from a water ligand and one O atom from a dimethyl-formamide ligand in a slightly distorted octa-hedral environment. In the crystal structure, centrosymmetric dimers are formed though O-H⋯O and O-H⋯Cl hydrogen bonds; π-π stacking inter-actions, with a centroid-centroid distance of 3.796 (2) Å, are also found.
Project description:The title oxidovanadium(V) complex, [V(C(15)H(11)N(3)O(5))(CH(3)O)O], was obtained by the reaction of 2-hy-droxy-3-meth-oxy-benzaldehyde, 4-nitro-benzohydrazide and vanadyl sulfate in methanol. The V(V) atom is five-coordinated by the two O and one N donor atoms of the Schiff base ligand, one methano-late O atom and one oxido O atom, forming a distorted square-pyramidal geometry.
Project description:In the title complex, [Cd(NO(2))(C(22)H(20)N(6))(CH(3)OH)]ClO(4), the Cd(II) ion is in a distorted penta-gonal-bipyramidal CdN(4)O(3) coordination geometry. The dihedral angles formed between the mean planes of the pyrazole rings and the phenanthroline ring system are 4.37 (19) and 5.84 (21)°. In the crystal, the anions and cations are connected by inter-molecular O-H⋯O hydrogen bonding, while pairs of weak inter-molecular C-H⋯O hydrogen bonds connect the cations into centrosymmetric dimers. In addition, there is a π-π stacking inter-action involving two symmetry-related benzene rings, with a centroid-centroid distance of 3.437 (3) Å.
Project description:The title compound, [Cd(NO(3))(C(5)H(8)N(2))(4)]NO(3), was prepared by reaction of cadmium nitrate and 3,5-dimethyl-pyrazole in ethanol solution. The Cd atom adopts a distorted cis-CdO(2)N(4) octa-hedral geometry involving four dimethylpyrazole molecules and one bidentate nitrate anion. The mol-ecular structure and packing are stabilized by N-H⋯O and C-H⋯O inter- and intra-molecular hydrogen-bonding inter-actions.
Project description:In the title compound, [Cu(C(13)H(14)BrNO(3))(C(12)H(8)N(2))]·2H(2)O, the Cu(II) atom is penta-coordinated in a square-pyramidal geometry. The crystal packing is stabilized by O-H?O hydrogen bonds.
Project description:The asymmetric unit of the title compound, C(16)H(12)Cl(4)N(2)O(2), comprises half of a potentially tetra-dentate Schiff base ligand, located about a twofold rotation axis which bis-ects the central C-C bond of the ethane-1,2-diamine group. In the solid state, the compound exists in the zwitterionic form. There are two intra-molecular N-H⋯O hydrogen bonds making S(6) ring motifs. In the crystal, mol-ecules are linked by C-H⋯O hydrogen bonds, forming two-dimensional frameworks which lie parallel to (100). There are also short Cl⋯Cl [3.4395 (9) Å] contacts present.