ChemInform Abstract: COPPER(II) COMPLEXES OF THE BIDENTATE SCHIFF-BASE LIGAND 2-(PHENYLIMINOMETHYL)PYRIDINE AND SOME RELATED LIGANDS

1975 ◽  
Vol 6 (20) ◽  
pp. no-no
Author(s):  
ERIK J. HALBERT
Keyword(s):  
Schiff Base ◽  
Schiff Base Ligand ◽  
Bidentate Schiff Base Ligand

Cyclometalated Pt(ii) complexes with a bidentate Schiff-base ligand displaying unexpected cis/trans isomerism: synthesis, structures and electronic properties

2017 ◽  
Vol 46 (37) ◽  
pp. 12500-12506 ◽  
Author(s):  
A. Poma ◽  
A. Forni ◽  
C. Baldoli ◽  
P. R. Mussini ◽  
A. Bossi
Keyword(s):  
Schiff Base ◽  
Electronic Properties ◽  
Computational Methods ◽  
Schiff Base Ligand ◽  
X Ray Diffraction ◽  
X Ray ◽  
Bidentate Schiff Base Ligand

Unexpected cis/trans isomerism in a bis-cyclometalated Pt(ii) complex is investigated by NMR, X-ray diffraction, optical, electrochemical and computational methods and rationalized.

Copper(II) complexes of the bidentate Schiff-base ligand 2-(Phenyliminomethyl)pyridine and some related ligands

1975 ◽  
Vol 28 (2) ◽  
pp. 313 ◽  
Author(s):  
EJ Halbert
Keyword(s):  
Schiff Base ◽  
Schiff Bases ◽  
Schiff Base Ligand ◽  
Bidentate Schiff Base Ligand ◽  
Aliphatic Diamines ◽  
Solid Compounds

A number of copper(II) complexes of anils of pyridine-2-carbaldehyde with chloride, bromide, nitrate and perchlorate as anions have been prepared. Spectral and conductivity studies suggest that the compounds may be compared with the complexes of ligands such as bipyridyl and Schiff bases derived from pyridine-2-carbaldehyde and aliphatic diamines. Physicochemical evidence is given for the stereochemistry of the compounds. Mono-, bis- and tris-chelated compounds have been obtained. Complexes of the type CuLX2 (where X = Cl and Br) appear to be polymers with a five- or six-coordinate copper(II) stereochemistry. Evidence is presented for the existence of the five-coordinate cation [CuL2X]+ (where X = Br and NO3) in the solid compounds of type CuL2X2. In solution in nitromethane and methanol interaction occurs with the solvent. The bis- and tris- perchlorato compounds CuL2(ClO4)2 and CuL3(ClO4)2,2H2O are described and possible structures suggested by comparison with analogous compounds.

Platinum(II) complex with 4-nitro-N-(pyridin-2-ylmethylidene)aniline: synthesis, characterization, crystal structure and antioxidant activity

2020 ◽  
Vol 76 (11) ◽  
pp. 1005-1009
Author(s):  
Mehdi Khalaj ◽  
Abolfazl Olyaei ◽  
Mahdieh Sadeghpour ◽  
Arash Lalegani ◽  
Janusz Lipkowski ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Antioxidant Activity ◽  
Schiff Base ◽  
Schiff Base Ligand ◽  
Chain Structure ◽  
X Ray Diffraction ◽  
X Ray ◽  
Square Planar ◽  
Dpph Method ◽  
Bidentate Schiff Base Ligand

A novel complex has been prepared using the (E)-4-nitro-N-(pyridin-2-ylmethylidene)aniline bidentate Schiff base ligand and PtCl2, namely, dichlorido[(E)-4-nitro-N-(pyridin-2-ylmethylidene)aniline-κ2 N,N′]platinum(II) acetonitrile hemisolvate, [PtCl2(C12H9N3O2)]·0.5CH3CN, 1. According to the X-ray measurements of the crystal structure, the PtII ion adopts a PtCl2N2 square-planar coordination. The coordination of the Schiff base ligand to the PtII ion occurs in a cyclic bidentate fashion, as a result of which a five-membered metallacycle is formed. Furthermore, in the structure of 1, the neutral molecules form a one-dimensional chain structure through C—H...Cl and C—H...O hydrogen bonds. The characterization of the complex was performed via single-crystal X-ray diffraction, IR spectroscopy and elemental analysis, and the antioxidant activity of the complex was evaluated using spectrophotometry by the 1,1-diphenyl-2-picrylhydrazyl (DPPH) method.

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