scholarly journals New Platinum(II) Complex Containing Asymmetric Tetra Dentate Schiff Base Ligand Synthesis, Characterization and DFT Calculation

2012 ◽  
Vol 9 (4) ◽  
pp. 2114-2118 ◽  
Author(s):  
Alireza Akbari ◽  
Iran Sheikhshoaie ◽  
Lotfali Saghatforoush ◽  
S. Yousof Ebrahimipour ◽  
Zohreh Amiri
Keyword(s):  
Schiff Base ◽  
Schiff Base Ligand ◽  
Dft Calculation ◽  
Structural Parameters ◽  
Platinum Complex ◽  
Molar Conductivity ◽  
Cationic Complex ◽  
Square Planar ◽  
Optimized Geometries ◽  
Good Agreement

The tetra dentate neutral (E)-4-nitro-2-((2-(2-(pyridin-2-yl) ethylthio) ethylimino) methyl) phenol, (pytaO2NSalH), Schiff-base ligand was synthesized using 1-(2-pyridyl)-3-thia-s-aminopentane (pyta) and 5-NO2salicylaldehyde. Then the related square planar Pt (II) cationic complex, [Pt (NSNO)] Cl, was synthesized using PtCl2(SMe2)2as precursor complex. The nature of the pytaO2NSalH and its platinum complex were determined by the elemental analysis, molar conductivity and spectrochemical (IR, UV–vis,1HNMR) techniques. In addition, the fully optimized geometries and vibration frequencies of them together were calculated using the ADF 2009.01 package. Structural parameters are in good agreement with the experimental data. The calculated and experimental results confirmed the suggested structures for the ligand and complex.

Copper(ii) induced oxidative modification and complexation of a schiff base ligand: synthesis, crystal structure, catalytic oxidation of aromatic hydrocarbons and DFT calculation

RSC Advances ◽  
2014 ◽  
Vol 4 (65) ◽  
pp. 34248-34256 ◽  
Author(s):  
Surajit Biswas ◽  
Arpan Dutta ◽  
Malay Dolai ◽  
Mainak Debnath ◽  
Atish Dipankar Jana ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Schiff Base ◽  
Catalytic Oxidation ◽  
Schiff Base Ligand ◽  
Aromatic Hydrocarbons ◽  
Dft Calculation ◽  
Oxidative Modification ◽  
Oh Groups ◽  
Planar Complex ◽  
Square Planar

A mononuclear square planar complex [CuII(L2f)], formed from a Schiff baseH2Laand Cu2+with the concomitant oxidation of two –CH2OH groups to aldehyde, displayed catalytic oxidation of aromatic hydrocarbons.

{1-[2-(Methylamino)ethyliminomethyl]naphthalen-2-olato}thiocyanatocopper(II)

2006 ◽  
Vol 62 (7) ◽  
pp. m1533-m1534 ◽  
Author(s):  
Han-Na Hou
Keyword(s):  
Schiff Base ◽  
Schiff Base Ligand ◽  
Title Compound ◽  
Planar Geometry ◽  
Asymmetric Unit ◽  
Thiocyanate Anion ◽  
Square Planar

The title compound, [Cu(C14H15N2O)(NCS)], is a mononuclear copper(II) complex, with two molecules in the asymmetric unit. The CuII ion is coordinated by one O and two N atoms of a Schiff base ligand, and by one N atom of a thiocyanate anion, forming a square-planar geometry.

scholarly journals Some Metal Ions Complexes Derived From Schiff Base Ligand with Anthranillic Acid: Preparation, Spectroscopic and Biological Studies

2020 ◽  
Vol 17 (1) ◽  
pp. 0099
Author(s):  
Lekaa khalid Karem
Keyword(s):  
Schiff Base ◽  
Schiff Base Ligand ◽  
Magnetic Moment ◽  
Primary Amine ◽  
Molar Conductivity ◽  
Spectroscopic Methods ◽  
Geometrical Shape ◽  
Biological Studies ◽  
Different Types ◽  
Uv Visible

This search includes the preparation of Schiff base ligand (SB) from condensation primary amine with vanillin. The new ligand was diagnosed by spectroscopic methods as Mass, NMR, CHN and FTIR. Ligand complexes were mixed from new (SB) and Anthranillic acid (A) with five metal (II) chlorides. The preparation and diagnosis were conducted by FTIR, CHN, UV-visible, molar conductivity, atomic absorption and magnetic moment. The octahedral geometrical shape of the complexes was proposed. The ligands and their new complexes were screened with two different types of bacteria.

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.

Azido{1-[(2-diethylaminoethylimino)methyl]naphthalato}copper(II)

2006 ◽  
Vol 62 (4) ◽  
pp. m849-m850 ◽  
Author(s):  
Xiao-Yang Qiu
Keyword(s):  
Schiff Base ◽  
Schiff Base Ligand ◽  
Title Compound ◽  
Coordination Geometry ◽  
Azide Anion ◽  
Square Planar

The title compound, [Cu(C17H21N2O)(N3)], is a mononuclear copper(II) complex. The central CuII ion is four-coordinated by one O and two N atoms of the Schiff base ligand, and by one N atom of an azide anion, forming a distorted square-planar coordination geometry.

scholarly journals Synthesis, Spectroscopy, Theoretical, and Electrochemical Studies of Zn(II), Cd(II), and Hg(II) Azide and Thiocyanate Complexes of a New Symmetric Schiff-Base Ligand

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Morteza Montazerozohori ◽  
Kimia Nozarian ◽  
Hamid Reza Ebrahimi
Keyword(s):  
Schiff Base ◽  
Metal Complexes ◽  
Schiff Base Ligand ◽  
Structural Parameters ◽  
Free Ligand ◽  
Basis Set ◽  
Cyclic Voltammograms ◽  
Hybrid Functional ◽  
Ft Ir ◽  
C Nmr

Synthesis of zinc(II)/cadmium(II)/mercury(II) thiocyanate and azide complexes of a new bidentate Schiff-base ligand (L) with general formula of MLX2(M = Zn(II), Cd(II), and Hg(II)) in ethanol solution at room temperature is reported. The ligand and metal complexes were characterized by using ultraviolet-visible (UV-visible), Fourier transform infrared (FT-IR),1H- and13C-NMR spectroscopy and physical characterization, CHN analysis, and molar conductivity.1H- and13C-NMR spectra have been studied in DMSO-d6. The reasonable shifts of FT-IR and NMR spectral signals of the complexes with respect to the free ligand confirm well coordination of Schiff-base ligand and anions in an inner sphere coordination space. The conductivity measurements as well as spectral data indicated that the complexes are nonelectrolyte. Theoretical optimization on the structure of ligand and its complexes was performed at the Becke’s three-parameter hybrid functional (B3) with the nonlocal correlation of Lee-Yang-Parr (LYP) level of theory with double-zeta valence (LANL2DZ) basis set using GAUSSIAN 03 suite of program, and then some theoretical structural parameters such as bond lengths, bond angles, and torsion angles were obtained. Finally, electrochemical behavior of ligand and its complexes was investigated. Cyclic voltammograms of metal complexes showed considerable changes with respect to free ligand.

Azido{2-[(tri-2-pyridylmethyl)iminomethyl]phenolato}nickel(II)

2007 ◽  
Vol 63 (11) ◽  
pp. m2812-m2812 ◽  
Author(s):  
Lai-Jin Tian ◽  
Hong-Jun Yang ◽  
Zhong-Hai Ni
Keyword(s):  
Schiff Base ◽  
Schiff Base Ligand ◽  
Sodium Azide ◽  
Title Compound ◽  
Methanol Solution ◽  
The Other ◽  
Planar Geometry ◽  
Square Planar ◽  
Azide Ligand

The title compound, [Ni(C23H17N4O)(N3)], was obtained by the reaction of the Schiff base ligand 2-[(tri-2-pyridylmethyl)iminomethyl]phenol with sodium azide and nickel(II) perchlorate in methanol solution. The NiII atom is four-coordinated by the phenolate O, the imine N and a pyridine N atom of the Schiff base ligand, and by the terminal N atom of an azide ligand, forming a square-planar geometry. The other two pyridyl rings are oriented at an angle of 72.29 (11)° to each other.

scholarly journals Synthesis, Characterization and Thermal Studies of Fe(II), Co(II), Ni(II) and Cu(II) Complexes with bis-(4-benzylidenamino-phenyl)-methane Schiff base ligand

2021 ◽  
Vol 2063 (1) ◽  
pp. 012004
Author(s):  
Atared F. Hassan ◽  
Hiba H. Sabah ◽  
Afaq A. Turki
Keyword(s):  
Schiff Base ◽  
Metal Ions ◽  
General Formula ◽  
Elemental Analysis ◽  
Schiff Base Ligand ◽  
Thermal Studies ◽  
Molar Conductivity ◽  
Conductivity Measurements ◽  
Infra Red ◽  
Thermal Stable

Abstract A new series of Co(II), Fe(II), Cu(II) and Ni(II) complexes of Bis–(4-benzylidenamino-phenyl)-methane (L) have been prepared and characterized. The complexes conform to general formula [CoL(H2O)3] Cl2, [FeL(H2O)5]SO4.2H2O, [CuL(H2O)5] NO3 and [NiL(H2O)3Cl2], Infra red spectra and elemental analysis reveal uni-dentate coordination of Schiff base to metal ions. Molar conductivity measurements show that complexes (I, III) behave as 2:1 electrolyte while complex (II) behave as 1:1 electrolyte. The thermal studies for complexes shows that the complexes are thermal stable.

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