Some New Concepts in Polymer Stabilization

1971 ◽  
Vol 44 (5) ◽  
pp. 1421-1428 ◽  
Author(s):  
G. Scott
Keyword(s):  
Antioxidant Activity ◽  
Transition Metal ◽  
Metal Ions ◽  
Metal Complexes ◽  
Transition Metal Ions ◽  
Antioxidant Systems ◽  
Active Compounds ◽  
New Concepts ◽  
Polymer Stabilization ◽  
Sulfur Containing

Abstract The mechanisms of antioxidant activity are briefly reviewed. Antioxidant systems based on catalase-active compounds, and the use of sulfur-containing metal complexes and transition metal ions as antioxidants are discussed.

Synthesis, Characterization and in vitro Biological Evaluation of a New Schiff Base Derived from Drug and its Complexes with Transition Metal Ions

2018 ◽  
Vol 69 (7) ◽  
pp. 1678-1681
Author(s):  
Amina Mumtaz ◽  
Tariq Mahmud ◽  
M. R. J. Elsegood ◽  
G. W. Weaver
Keyword(s):  
Schiff Base ◽  
Transition Metal ◽  
Metal Ions ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Free Ligand ◽  
Transition Metal Ions ◽  
Biological Evaluation ◽  
Pyridoxal Hydrochloride

New series of copper (II), cobalt (II), zinc (II), nickel (II), manganese (II), iron (II) complexes of a novel Schiff base were prepared by the condensation of sulphadizine and pyridoxal hydrochloride. The ligand and metal complexes were characterized by utilizing different instrumental procedures like microanalysis, thermogravimetric examination and spectroscopy. The integrated ligand and transition metal complexes were screened against various bacteria and fungus. The studies demonstrated the enhanced activity of metal complexes against reported microbes when compared with free ligand.

scholarly journals Theoretical Insights into the Catalytic Effect of Transition-Metal Ions on the Aquathermal Degradation of Sulfur-Containing Heavy Oil: A DFT Study of Cyclohexyl Phenyl Sulfide Cleavage

ACS Omega ◽  
2020 ◽  
Vol 5 (31) ◽  
pp. 19589-19597
Author(s):  
Ilya Tverdov ◽  
Nail R. Khafizov ◽  
Timur I. Madzhidov ◽  
Mikhail A. Varfolomeev ◽  
Chengdong Yuan ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Ions ◽  
Heavy Oil ◽  
Catalytic Effect ◽  
Transition Metal Ions ◽  
Dft Study ◽  
Phenyl Sulfide ◽  
Sulfur Containing

scholarly journals The proton and metal complexes of adenyl-5′-yl imidodiphosphate

1976 ◽  
Vol 159 (1) ◽  
pp. 169-171 ◽  
Author(s):  
L D Pettit ◽  
K F Siddiqui
Keyword(s):  
Complex Formation ◽  
Transition Metal ◽  
Metal Ions ◽  
Metal Complexes ◽  
Transition Metal Ions ◽  
Formation Constants ◽  
Enthalpy Change ◽  
Two Temperatures ◽  
Bivalent Transition Metal

The formation constants of the complexes of adenyl-5′-yl imidodiphosphate with H+ Mg2+, Ca2+ and a number of bivalent transition-metal ions were measured potentionmetrically. The complexes are generally a little more stable than the analogous complexes of ATP. By measuring the formation constants at two temperatures, this increase in stability was shown to result from an increased enthalpy change on complex-formation.

scholarly journals Synthesis, Characterization, Molecular Docking and Enzyme Inhibition Studies of Some Novel Enaminone Derivatives and Their Complexes with Cu(II), Cd(II) and Co(II) Ions

2019 ◽  
Vol 70 (10) ◽  
pp. 3564-3569
Author(s):  
Rahila Huma ◽  
Tariq Mahmud ◽  
Liviu Mitu ◽  
Muhammad Ashraf ◽  
Ambar Iqbal ◽  
...  
Keyword(s):  
Molecular Docking ◽  
Transition Metal ◽  
Metal Ions ◽  
Metal Complexes ◽  
1H Nmr ◽  
13C Nmr ◽  
Transition Metal Ions ◽  
Binding Mode ◽  
Inhibitory Activities ◽  
Inhibition Studies

Two new enaminone ligands, 3-chloro-4-{(4-chlorophenyl)amino}pent-3-en-2-one (Ac-PCA), 4-(benzylamino)-3-chloropent-3-en-2-one (Ac-BA) and their metal complexes with transition metal ions [Cu(II), Cd(II) and Co(II)] were prepared and subsequently characterized by FTIR, ICP-AES, UV-Vis, TGA, 1H NMR, 13C NMR and FAB-MS. These newly synthesized compounds were further investigated for anti-acetylcholinesterase (AChE) and anti-urease activities. The (Ac-BA)Cu(II) complex exhibited good anti-AChE while (Ac-BA)2Co(II) complex was potent against anti-urease activities. Other ligands and complexes showed poor to no enzyme inhibitory activities. The synthesized compounds were docked inside acetylcholinesterase enzymes to determine their putative binding mode.

Macromolecular metal complexes with transition-metal ions: Structure of a polymer and efficiency of complexation

2006 ◽  
Vol 48 (2) ◽  
pp. 183-191 ◽  
Author(s):  
V. D. Pautov ◽  
E. V. Anufrieva ◽  
T. D. Anan’eva ◽  
V. B. Lushchik ◽  
T. N. Nekrasova ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Ions ◽  
Metal Complexes ◽  
Transition Metal Ions
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