Jiu-Fu Lu

N'-(2-Hydroxy-benzyl-idene)-2-methoxy-benzohydrazide monohydrate.

In the title compound, C15H14N2O3·H2O, the Schiff base molecule is approximately planar, with a dihedral angle between the two aromatic rings of 10.2 (3)°. The molecular structure is stabilized by O—H⋯N and N—H⋯O hydrogen bonds. In the crystal structure, the Schiff base and water molecules are linked together by intermolecular O—H⋯O hydrogen bonds, forming chains parallel to the a axis.

2-Meth-oxy-N'-(2-methoxy-benzyl-idene)benzohydrazide.

The title Schiff base compound, C16H16N2O3, was derived from the condensation of 2-methoxybenzaldehyde with 2-methoxybenzohydrazide in an ethanol solution. The dihedral angle between the two aromatic rings is 87.5 (3)°. In the crystal structure, the molecules are linked into chains running parallel to the a axis by intermolecular N—H⋯O hydrogen bonds.

4-Chloro-N'-(2-hydroxy-benzyl-idene)benzohydrazide monohydrate.

The asymmetric unit of the title compound, C14H11ClN2O2·H2O, contains a Schiff base molecule and a water molecule of crystallization. The dihedral angle between the two aromatic rings is 27.3 (4)°. In the crystal structure, molecules are linked into a two-dimensional network parallel to the bc plane by intermolecular O—H⋯O and N—H⋯O hydrogen bonds involving the water molecules.

4-Hy­droxy-N′-[1-(2-hy­droxy­phen­yl)ethyl­idene]benzohydrazide

In the title compound, C15H14N2O3, there is an intramolecular O—H⋯N hydrogen bond and the dihedral angle between the two aromatic rings is 13.9 (3)°. In the crystal structure, molecules are stabilized by intermolecular O—H⋯O and N—H⋯O hydrogen bonds.

Bis[2-(cyclo-pentyl-imino-meth-yl)-5-meth-oxy-phenolato]copper(II).

The title compound, [Cu(C13H16NO2)2], is a mononuclear copper(II) complex derived from the Schiff base ligand 2-(cyclopentyliminomethyl)-5-methoxyphenol and copper acetate. The CuII atom is four-coordinated by the phenolate O atoms and imine N atoms from two Schiff base ligands, in a highly distorted square-planar geometry. The O- and N-donor atoms are mutually trans and the dihedral angle between the two benzene rings is 55.8 (3)°.

Bis{1-[3-(diethyl­ammonio)­propyl­imino­meth­yl]naphthalen-2-olato}nickel(II) dinitrate

The asymmetric unit of the title compound, [Ni(C18H24N2O)2](NO3)2, consists of one half of the centrosymmetric nickel(II) complex cation and a nitrate anion. The NiII atom, lying on an inversion center, is four-coordinated by the phenolate O atoms and imine N atoms of two Schiff base ligands, forming a square-planar geometry. The O- and N-donor atoms are mutually trans. In the crystal structure, the nitrate anions are linked to the complex cations by intermolecular N—H⋯O hydrogen bonds.

N'-(4-Hydr-oxy-3-methoxy-benzyl-idene)-4-methoxy-benzohydrazide monohydrate.

In the title compound, C16H16N2O4·H2O, the dihedral angle between the two aromatic rings is 19.6 (2)°. In the crystal structure, molecules are linked into a three-dimensional network by intermolecular N—H⋯O, O—H⋯N and O—H⋯O hydrogen bonds.

Syntheses and structural characterization of silver(I) complexes with pyridine and carboxylate derivatives

AbstractSelf-assembly between silver carboxylates with 2-aminopyridine derivatives give two silver(I) complexes, [[Ag(5MP)2(CNB)] · NH3 (I) and [Ag(3MP)2(HMB)] (II), where 5MP, CNB, 3MP, and HMB represent 2-amin-5-methylpyridine, 5-chloro-2-nitrobenzoate, 2-amino-3-methylpyridine, and 2-hydroxy-3-methoxybenzoate, respectively. The crystal structures of the complexes were investigated. The Ag atom in each complex is coordinated by two pyridine N atoms and weakly coordinated by a carboxylic O atom. The crystal of I is triclinic: space group P

A Novel Coordination Polymer Based on Trinuclear Cobalt Building Blocks Cluster: Synthesis, Crystal Structure, and Properties

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