ABSTRACT: The title Schiff base complex, [V(C(13)H(7)BrClNO(2))(CH(3)O)O(CH(3)OH)], features a vanadyl group, a tridentate Schiff base ligand, and coordinated methanol and methano-late ligands. The NO(5) donor set is based on a distorted octa-hedron. Helical supra-molecular chains along [010] are found in the crystal structure mediated by O-H⋯O hydrogen bonds formed between the coordinating methanol mol-ecule and the phenolate O atom of the chloro-benzene residue.
Project description:The title oxidovanadium(V) complex, [V(C(17)H(17)N(3)O(2))(CH(3)O)O], was obtained by the reaction of 2-acetyl-phenol, 4-dimethyl-amino-benzohydrazide and vanadyl sulfate in methanol. The V(V) atom is five-coordinated by N,O,O'-donor atoms of the Schiff base ligand, one meth-oxy O atom and one oxide O atom, forming a square-pyramidal geometry.
Project description:The title oxidovanadium(V) complex, [V(C(17)H(16)N(2)O(3))(CH(3)O)O], was obtained by the reaction of 3-eth-oxy-2-hy-droxy-benzaldehyde, 4-methyl-benzohydrazide and vanadyl sulfate in methanol. The V(V) atom is coordinated by the O,N,O'-tridentate Schiff base ligand, one methano-late O atom and one oxide O atom, forming a distorted VO(4)N square-pyramidal coordination geometry. The oxide O atom lies at the apex of the square pyramid and the N atom of the ligand and the methano-late O atom are trans. The dihedral angle between the benzene rings of the ligand is 1.8 (3)°.
Project description:In the title complex, [V(C(16)H(13)NO(3))(CH(3)O)O(CH(3)OH)], the V(V) atom is six-coordinated by a tridentate ligand derived from the condensation of salicyl-aldehyde and l-phenyl-alanine, a vanadyl O atom, a methano-late O atom and a methanol O atom, forming a distorted octa-hedral coordination geometry. In the crystal, inter-molecular O-H⋯O and C-H⋯O hydrogen bonds result in a two-dimensional structure parallel to (001).
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:The V(V) atom in the title complex, [V(C(14)H(8)BrClN(2)O(2))(CH(3)O)O(CH(3)OH)], is six-coordinated by one phenolate O, one imine N and one enolic O atom of the hydrazone ligand, one oxide O atom, one methanol O atom and one methoxide O atom in a distorted octa-hedral geometry. The dihedral angle between the two benzene rings of the hydrazone ligand is 13.2?(3)°. The deviation of the V atom towards the oxide O atom from the plane defined by the three donor atoms of the hydrazone ligand and the meth-oxy O atom is 0.318?(2)?Å. Bond lengths are comparable with those observed in similar oxidovanadium(V) complexes with hydrazone ligands. In the crystal, pairs of mol-ecules are linked through inter-molecular O-H?N hydrogen bonds, forming dimers.
Project description:The V(IV) atom in the title complex, [V(C(11)H(13)BrClN(2)O)(C(5)H(7)O(2))O], is six-coordinated by one phenolate O, one imino N and one amino N atom of the tridentate anionic Schiff base ligand, by one oxide O atom, and by two O atoms of an acetyl-acetonate anion, forming a distorted cis-VN(2)O(4) octa-hedral coordination geometry. The deviation of the V atom from the plane defined by the three donor atoms of the Schiff base ligand and one O atom of the acetyl-acetone ligand towards the oxide O atom is 0.256?(2)?Å.
Project description:The title oxovanadium(V) complex, [V(C(18)H(13)N(3)O(2))(CH(3)O)O(CH(3)OH)], was obtained by the reaction of 1-(2-hy-droxy-naphthalen-1-yl)ethanone, nicotinohydrazide and vanadyl sulfate in methanol. The V(V) atom is six-coordinated by the N,N,O-tridentate Schiff base ligand, one methano-late O atom, one methanol O atom and one oxide O atom, forming a distorted octa-hedral geometry. The methanol O atom lies trans to the V=O group. The dihedral angle between the pyridine ring and the naphthalene ring system is 31.52 (10)°. In the crystal, inversion dimers linked by pairs of O-H⋯N hydrogen bonds occur.
Project description:In the title mol-ecule, [V(C(15)H(10)I(2)N(2)O(2))(CH(3)O)O(CH(3)OH)], the V(V) atom is coordinated by one N and two O atoms from an N'-(3,5-diiodo-2-oxidobenzyl-idene-?O)-4-methyl-benzo-hydra-zidate (L) ligand, one oxide O atom, one methano-late [V-O = 1.761?(3)?Å] and one methanol [V-O = 2.383?(4)?Å] O atom in a distorted octa-hedral geometry. In the L ligand, the two benzene rings are nearly parallel, forming a dihedral angle of 2.0?(1)°. In the crystal, inter-molecular O-H?N hydrogen bonds link pairs of mol-ecules into centrosymmetric dimers which exhibit ?-? inter-actions between the aromatic rings [centroid-centroid distance = 3.677?(5)?Å].
Project description:The title compound, [Zn(C(13)H(16)BrN(2)O(2))I(CH(3)OH)], is a new mononuclear zinc(II) complex synthesized by the reaction of equimolar quanti-ties of 5-bromo-salicylaldehyde, 2-morpholinoethyl-amine and ZnI(2) in methanol. The Zn atom is four-coordinate in a distorted tetra-hedral geometry, binding to a phenolate O and an imine N atom of the Schiff base ligand, the O atom of a methanol mol-ecule and one I(-) anion. In the crystal structure, adjacent mol-ecules are linked through inter-molecular O-H⋯O hydrogen bonds, forming centrosymmetric dimers.
Project description:The title complex, [Fe(C(12)H(9)ClNO(2))(3)], is a mononuclear Schiff base iron(III) compound. The Fe atom is six-coordinated by three phenolic O and three imine N atoms from three Schiff base ligands in an octa-hedral geometry.