Synthesis, characterization, powder X-ray diffraction analysis, thermal stability, antioxidant properties and enzyme inhibitions of M(II)-Schiff base ligand complexes

2020 ◽  
pp. 1-8
Author(s):  
Kenan Buldurun ◽  
Nevin Turan ◽  
Ercan Bursal ◽  
Abdulmelik Aras ◽  
Asim Mantarcı ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Schiff Base ◽  
Diffraction Analysis ◽  
Schiff Base Ligand ◽  
Antioxidant Properties ◽  
X Ray Diffraction ◽  
X Ray

Large interaction energy for the homodimer and the heterodimer extracted from the supramolecular chain of a bent trinuclear zinc(II) complex with a reduced Schiff base ligand

2022 ◽  
Author(s):  
Mainak Karmakar ◽  
Rosa M. Gomila ◽  
Antonio Frontera ◽  
Shouvik Chattopadhyay
Keyword(s):  
Schiff Base ◽  
Diffraction Analysis ◽  
Schiff Base Ligand ◽  
Zinc Complex ◽  
Spectroscopic Methods ◽  
X Ray Diffraction ◽  
Amino Groups ◽  
X Ray ◽  
Reduced Schiff Base ◽  
Large Interaction

A bent trinuclear zinc complex, [Zn{ZnIL}2]•DMF {H2L = 2,2'-[(2,2-Dimethyl-1,3-propanediyl)bis(iminomethylene)]bis[6-methoxyphenol]} was synthesized and characterized by standard spectroscopic methods and X-ray diffraction analysis. The existence of coordinated amino groups and iodide counter...

Synthesis of an Unprecedented H-stitched Binuclear Crystal Structure Based on Selective Fluorescence Recognition of Zn2+ in Newly Synthesized Schiff Base Ligand with DFT and Imaging Application in Living Cells

2021 ◽  
Author(s):  
SOUMYA SUNDAR MATI ◽  
Dr. SAUGATA KONAR ◽  
BOBY SAMAI
Keyword(s):  
Crystal Structure ◽  
Schiff Base ◽  
Elemental Analysis ◽  
Schiff Base Ligand ◽  
Binuclear Complex ◽  
Living Cells ◽  
X Ray Diffraction ◽  
Schiff Base Ligands ◽  
X Ray ◽  
Imaging Application

A zinc coordinated rare binuclear complex was synthesised and characterized by elemental analysis and single-crystal X-ray diffraction. Two mononuclear units formed by two Schiff base ligands 2-((2-(pyrimidin-2-yl)hydrazono)methyl)phenol (PHP) coordinated with...

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.

Syntheses, Crystal Structures and Thermal Stability of Co(II) and Zn(II) Complexes with Ethyl Carbazate

2005 ◽  
Vol 60 (5) ◽  
pp. 505-510 ◽  
Author(s):  
Tong-Lai Zhang ◽  
Jiang-Chuang Song ◽  
Jian-Guo Zhang ◽  
Gui-Xia Ma ◽  
Kai-Bei Yu
Keyword(s):  
Thermal Stability ◽  
Aqueous Solutions ◽  
Diffraction Analysis ◽  
Single Crystals ◽  
Slow Evaporation ◽  
X Ray Diffraction ◽  
Element Analysis ◽  
Thermal Stabilities ◽  
X Ray ◽  
Thermal Stability Of

Cobalt(II) and zinc(II) complexes of ethyl carbazate (ECZ), [Co(ECZ)3](NO3)2 and [Zn(ECZ)3] (NO3)2, were synthesized. Single crystals of these two compounds were grown from aqueous solutions using a slow evaporation method. Their structures have been determined by X-ray diffraction analysis. Both of them are monoclinic with space group P21/n. The complexes are further characterized by element analysis and IR measurements. Their thermal stabilities are studied by using TG-DTG, DSC techniques. When heated to 350 °C, only metal oxide was left for both complexes.

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.

Hydrothermal Synthesis and Luminescent Characterization of Zn (II) Complex with 1,4-Bis(2’-formylphenyl)-1,4-dioxabutane Isonicotinoylhydrazone

2012 ◽  
Vol 424-425 ◽  
pp. 23-26
Author(s):  
Li Hua Wang
Keyword(s):  
Schiff Base ◽  
Hydrothermal Synthesis ◽  
Single Crystal ◽  
Diffraction Analysis ◽  
Schiff Base Ligand ◽  
Ir Spectrum ◽  
Luminescent Properties ◽  
Single Crystal Diffraction ◽  
X Ray

A aroylhydrazone Schiff-base ligand (1, 4-Bis(2’-formylphenyl)-1,4-dioxabutane isonicotinoylhydrazone) and its Zn (II) complex were synthesized by hydrothermal method. The ligand was characterized by IR spectrum, MS spectrum and X-ray single crystal diffraction analysis. The luminescent properties of the ligand and Zn (II) complex material have been investigated in solid and in organic solvents. The results show that the ligand has strong luminescent emission at ca. 454 nm and the fluorescence of Zn (II) complex is very weak.

Synthesis, crystal structures and characterizations of two homochiral coordination polymers based on a chiral reduced Schiff base ligand

2014 ◽  
Vol 70 (4) ◽  
pp. 375-378 ◽  
Author(s):  
Shao-Ming Ying ◽  
Xiao-Hui Huang ◽  
Wu-Kui Luo ◽  
Yan-Chun Xiao
Keyword(s):  
Schiff Base ◽  
Coordination Polymers ◽  
Schiff Base Ligand ◽  
Three Dimensional ◽  
X Ray Diffraction ◽  
Strong Emission ◽  
X Ray ◽  
Dimensional Network ◽  
Elemental Analyses ◽  
Reduced Schiff Base

Two homochiral coordination polymers based on a chiral reduced Schiff base ligand, namely poly[(μ5-4-{[(NR,1S)-(1-carboxylato-2-phenylethyl)amino]methyl}benzoato)zinc(II)], [Zn(C17H15NO4)]n, (1), and poly[(μ5-4-{[(NR,1S)-(1-carboxylato-2-phenylethyl)amino]methyl}benzoato)cobalt(II)], [Co(C17H15NO4)]n, (2), have been obtained by hydrothermal methods and studied by single-crystal X-ray diffraction, elemental analyses, powder X-ray diffraction, thermogravimetric analysis, IR spectroscopy and fluorescence spectroscopy. Compounds (1) and (2) are isostructural and crystallize in theP212121space group. Both display a three-dimensional network structure with a one-dimensional channel, with the benzyl group of the ligand directed towards the channel. An investigation of photoluminescence properties shows that compound (1) displays a strong emission in the purple region.

Syntheses and Structure Investigations of 3d Transition Metal Complexes with a Flexible N4O2-Donor Hexadentate Schiff-Base Ligand

2017 ◽  
Vol 70 (5) ◽  
pp. 581 ◽  
Author(s):  
Kyle J. Howard-Smith ◽  
Alexander R. Craze ◽  
Mohan Badbhade ◽  
Christopher E. Marjo ◽  
Timothy D. Murphy ◽  
...  
Keyword(s):  
Schiff Base ◽  
Transition Metal ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Schiff Base Ligand ◽  
High Resolution Mass Spectrometry ◽  
Molecular Structures ◽  
X Ray Diffraction ◽  
X Ray ◽  
Structure Investigations

The syntheses and structure investigations of four new 3d transition metal complexes (1–4) with a flexible N4O2-donor hexadentate Schiff-base ligand are described; three complexes (1, 2, and 4) of FeIII, CoIII, and CuII metal ions have been investigated by UV-vis, FT-IR, high-resolution mass spectrometry (HR-MS), and scanning electron microscopy–electron dispersive spectroscopy, as well as single crystal X-ray diffraction. The X-ray structure of NiII complex 3 is also reported. The molecular structures of the complexes (1–3) demonstrate distorted octahedral coordination geometry, each exhibiting 1 : 1 (M : L) ratios and the CuII complex 4 shows a trinuclear structure with a CuII : L ratio of 3 : 2 in the solid state, which has been proven by X-ray diffraction. On the other hand, a mononuclear species of the CuII complex is formed in solution, which has been identified by electrospray ionization HR-MS.

Crystal Structure of a Binuclear Copper(II) Complex with μ-Alkoxo and μ-Pyridonato Bridges. Effect of the Dihedral Angle on the Superexchange Interaction

1989 ◽  
Vol 44 (3) ◽  
pp. 307-311 ◽  
Author(s):  
Yuzo Nishida ◽  
Miyuki Masumoto ◽  
Yutaka Mori
Keyword(s):  
Crystal Structure ◽  
Schiff Base ◽  
Dihedral Angle ◽  
Schiff Base Ligand ◽  
Superexchange Interaction ◽  
X Ray Diffraction ◽  
Binuclear Copper ◽  
Ferromagnetic Interaction ◽  
X Ray

The crystal structure of the binuclear copper(II) complex. [Cu2(L)(2-pyridonato)] was determined by X-ray diffraction, where H3(L) represents the Schiff base ligand derived from 1,3-diaminopropane-2-ol and acetylacetone. Two copper(II) ions are bridged by alkoxide and 2-pyridonate groups with a Cu-Cu separation of 3.249(2) Å . Ferromagnetic interaction is found to be operating in this complex, which is attributed to the small dihedral angle (121°) between the two planes containing the copper(II) ion.

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