Kinetics of Schiff base ligand transfer and rate enhancement by metal ions

1973 ◽  
Vol 26 (11) ◽  
pp. 2541 ◽  
Author(s):  
WW Fee ◽  
A Gaetano
Keyword(s):  
Schiff Base ◽  
Metal Ions ◽  
Schiff Base Ligand ◽  
Chain Reaction ◽  
Schiff Base Ligands ◽  
Rate Enhancement ◽  
Rate Acceleration ◽  
Ligand Transfer ◽  
Kinetics Of

The kinetics of the transfer of Schiff base ligands between their nickel(II) and zinc(II) complexes have been examined in dmso. Reactions completed in the presence of added nickel(II) and zinc(II) ions indicate the occurrence of a coordination chain reaction with rate acceleration prompted by one chain initiating and one chain propa- gating step.

Complexes of water-soluble hexadentate schiff base ligands with a number of metal ions

Polyhedron ◽  
1988 ◽  
Vol 7 (19-20) ◽  
pp. 1881-1889 ◽  
Author(s):  
Dennis F. Evans ◽  
David A. Jakubovic
Keyword(s):  
Schiff Base ◽  
Metal Ions ◽  
Water Soluble ◽  
Schiff Base Ligands

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...

scholarly journals Synthesis and Spectral Analysis of Some Metal Ions Complexes with Mixed Ligands of Schiff Base and 1, 10-Phenanthroline

2017 ◽  
Vol 14 (1) ◽  
pp. 135-147
Author(s):  
Baghdad Science Journal
Keyword(s):  
Schiff Base ◽  
Metal Ions ◽  
Metal Complexes ◽  
Mass Spectrometer ◽  
Schiff Base Ligand ◽  
Metal Ion ◽  
Molecular Structures ◽  
Spectroscopic Techniques ◽  
Metal Ion Complexes ◽  
Free Schiff Base

The free Schiff base ligand (HL1) is prepared by being mixed with the co-ligand 1, 10-phenanthroline (L2). The product then is reacted with metal ions: (Cr+3, Fe+3, Co+2, Ni+2, Cu+2 and Cd+2) to get new metal ion complexes. The ligand is prepared and its metal ion complexes are characterized by physic-chemical spectroscopic techniques such as: FT-IR, UV-Vis, spectra, mass spectrometer, molar conductivity, magnetic moment, metal content, chloride content and microanalysis (C.H.N) techniques. The results show the formation of the free Schiff base ligand (HL1). The fragments of the prepared free Schiff base ligand are identified by the mass spectrometer technique. All the analysis of ligand and its metal complexes are in good agreement with the theoretical values indicating the purity of Schiff base ligand and the metal complexes. From the above data, the molecular structures for all the metal complexes are proposed to be octahedral

Synthesis, Structure and Fluorescence Properties of a Trinuclear Zn(II) Complex with N,N,O-donor Schiff Base Ligands and Bridging Acetates

2009 ◽  
Vol 64 (4) ◽  
pp. 403-408 ◽  
Author(s):  
Shyamapada Shit ◽  
Joy Chakraborty ◽  
Brajagopal Samanta ◽  
Georgina M. Rosair ◽  
Samiran Mitra
Keyword(s):  
Schiff Base ◽  
Schiff Base Ligand ◽  
Fluorescence Properties ◽  
Schiff Base Ligands ◽  
Thermal Methods ◽  
Metal Centers ◽  
X Ray ◽  
Octahedral Environment ◽  
Distorted Octahedral ◽  
Ft Ir

A new centrosymmetric trinuclear Zn(II) complex [Zn3L2(CH3COO)4] (1) has been synthesized by the reaction of Zn(CH3COO)2 · 2H2O with a tridentate N,N,O-donor Schiff base ligand HL [C5H4NC(CH3)=NC6H4(OH)] and systematically characterized by elemental analysis, FT-IR, UV/Vis and thermal methods. Single crystal X-ray structure analysis reveals that three Zn(II) centers are in two different coordination environments. Two terminal Zn(II) centers adopt a distorted squarepyramidal geometry leaving the central Zn(II) in a distorted octahedral environment. Two adjacent metal centers are connected through single μ2-phenolato as well as double μ-acetato-O,O´ syn-syn bridges. Fluorescence properties of the complex as compared to the ligand indicate that the former can serve as a potential photoactive material.

Construction of a 1-D Sm(iii) coordination polymer with a long-chain Schiff base ligand: dual-emissive response to metal ions

2020 ◽  
Vol 7 (2) ◽  
pp. 464-469 ◽  
Author(s):  
Jieni Liu ◽  
Ting Zhu ◽  
Xiaoping Yang ◽  
Hongfen Chen ◽  
Dongliang Shi ◽  
...  
Keyword(s):  
Schiff Base ◽  
Coordination Polymer ◽  
Metal Ions ◽  
Schiff Base Ligand ◽  
Ppm Level ◽  
Long Chain

A 1-D coordination polymer [Sm(HL)2(NO3)]n was constructed using a new flexible Schiff base ligand that has a long-chain (CH2)10 backbone, and it shows dual-emissive response to metal ions, especially to Co2+ at the ppm level.

scholarly journals An antipyrine based fluorescence “turn-on” dual sensor for Zn2+ and Al3+ and its selective fluorescence “turn-off” sensing towards 2,4,6-trinitrophenol (TNP) in the aggregated state

2019 ◽  
Vol 18 (11) ◽  
pp. 2717-2729 ◽  
Author(s):  
Sudipto Dey ◽  
Ashim Maity ◽  
Milan Shyamal ◽  
Debasish Das ◽  
Samir Maity ◽  
...  
Keyword(s):  
Schiff Base ◽  
Metal Ions ◽  
Schiff Base Ligand ◽  
Turn On ◽  
Dual Sensor ◽  
Fluorescence Turn On

A 2,6-diformyl-p-cresol (DFC)-4-amino antipyrine (AP) based dual signaling fluorescent Schiff base ligand (DFCAP) is found to exhibit colorimetric and fluorescence turn on selective sensing towards metal ions, Zn2+ and Al3+.

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