Dioxidovanadium(V) complexes of a tridentate ONO Schiff base ligand: Structural characterization, quantum chemical calculations and in-vitro antidiabetic activity

Polyhedron ◽  
2020 ◽  
Vol 180 ◽  
pp. 114434 ◽  
Author(s):  
Neetu Patel ◽  
A.K. Prajapati ◽  
R.N. Jadeja ◽  
R.N. Patel ◽  
S.K. Patel ◽  
...  
Keyword(s):  
Schiff Base ◽  
Quantum Chemical Calculations ◽  
Structural Characterization ◽  
Schiff Base Ligand ◽  
Quantum Chemical ◽  
Antidiabetic Activity

scholarly journals Structural Characterization of Heterodinuclear ZnII-LnIII Complexes (Ln = Pr, Nd) with a Ring-Contracted H2valdien-Derived Schiff Base Ligand

2021 ◽  
Author(s):  
Shabana Noor ◽  
Richard Goddard ◽  
Fehmeeda Khatoon ◽  
Sarvendra Kumar ◽  
Rüdiger W. Seidel
Keyword(s):  
Molecular Structure ◽  
Schiff Base ◽  
Structural Characterization ◽  
Schiff Base Ligand ◽  
Crystal And Molecular Structure ◽  
X Ray ◽  
X Ray Crystallography ◽  
Imidazoline Ring

AbstractSynthesis and structural characterization of two heterodinuclear ZnII-LnIII complexes with the formula [ZnLn(HL)(µ-OAc)(NO3)2(H2O)x(MeOH)1-x]NO3 · n H2O · n MeOH [Ln = Pr (1), Nd (2)] and the crystal and molecular structure of [ZnNd(HL)(µ-OAc)(NO3)2(H2O)] [ZnNd(HL)(OAc)(NO3)2(H2O)](NO3)2 · n H2O · n MeOH (3) are reported. The asymmetrical compartmental ligand (E)-2-(1-(2-((2-hydroxy-3-methoxybenzylidene)amino)-ethyl)imidazolidin-2-yl)-6-methoxyphenol (H2L) is formed from N1,N3-bis(3-methoxysalicylidene)diethylenetriamine (H2valdien) through intramolecular aminal formation, resulting in a peripheral imidazoline ring. The structures of 1–3 were revealed by X-ray crystallography. The smaller ZnII ion occupies the inner N2O2 compartment of the ligand, whereas the larger and more oxophilic LnIII ions are found in the outer O2O2’ site. Graphic Abstract Synthesis and structural characterization of two heterodinuclear ZnII-LnIII complexes (Ln = Pr, Nd) bearing an asymmetrical compartmental ligand formed in situ from N1,N3-bis(3-methoxysalicylidene)diethylenetriamine (H2valdien) through intramolecular aminal formation are reported.

scholarly journals Troilite (FeS) Oxidation in the Presence of a Newly Synthesized TRIS-based Base

2019 ◽  
Vol 70 (7) ◽  
pp. 2639-2642
Author(s):  
Madalina Ionela Duinea ◽  
Geta Carac ◽  
Irina Daniela Dabuleanu ◽  
Mihaela Alexandra Petcu ◽  
Laura Gabriela Sarbu ◽  
...  
Keyword(s):  
Cyclic Voltammetry ◽  
Schiff Base ◽  
Optical Microscopy ◽  
Quantum Chemical Calculations ◽  
Potentiodynamic Polarization ◽  
Quantum Chemical ◽  
Corrosion Current ◽  
Inhibitory Effect ◽  
Oxidative Dissolution ◽  
Current Densities

The effect of a newly synthesized TRIS-based Schiff base (XC) on the oxidative dissolution of FeS in air-equilibrated solutions with pH 2.26 and temperature of 27�C was investigated by Potentiodynamic polarization, Cyclic Voltammetry, Optical Microscopy and quantum chemical calculations. The XC concentration varied between 0 and 0.52 mM. It was observed that XC decreases the corrosion current densities of the oxidative dissolution of FeS. Our results indicate that the inhibitory effect of XC is due to its adsorption on the FeS surface.

scholarly journals Synthesis, Characterization, Antimicrobial and Anticancer Activity of New Bidentate Schiff Base Ligand and their Transition Metal(II) Complexes

2021 ◽  
Vol 33 (7) ◽  
pp. 1488-1494
Author(s):  
S. Arulmozhi ◽  
G. Sasikumar ◽  
A. Subramani ◽  
A. Sudha ◽  
S.J. Askar Ali
Keyword(s):  
Schiff Base ◽  
Anticancer Activity ◽  
Cell Lines ◽  
Schiff Base Ligand ◽  
Pathogenic Bacteria ◽  
Human Tumor ◽  
Spectral Studies ◽  
Breast Adenocarcinoma ◽  
Human Colon Cancer

The metal(II) complexes were synthesized by addition of corresponding MCl2 (M = Mn2+, Ni2+, Cu2+ and Zn2+) with 1,2-bis(1H-pyrrol-2-ylmethylene)diazane in methanol. The ligand acts as a bidentate as confirmed from the mass, IR, UV, NMR and EPR spectral studies. The Schiff base ligand forms hexa-coordinated complexes having octahedral geometry for Mn(II), Ni(II), Zn(II) and Cu(II) complexes. The metal complexes showed an excellent antimicrobial activity spectrum in vitro against both Gram-negative (Klebsiella pneumoniae and Acinetobacter baumannii), Gram-positive (Staphylococcus aureus and Enterococcus faecalis) and human pathogenic bacteria isolates. To find the binding affinity with protein BSA kinase, for that molecular docking studies were also carried for all the four synthesized metal(II) complexes. The anticancer activity of the synthesized metal(II) complexes was also screened against the three human tumor cell lines MCF7 human breast adenocarcinoma cell line, CaSki human caucasian cervical epidermoid carcinoma and HCT116 human colon cancer cell lines. The present study showed that Zn(II) complex showed potent inhibition by the ratio of 80% as compared to the inhibition in the normal cells (L-6).

Structure and Reactivity of [Mo3-μ3S-(μS2)3]4+Complexes. Quantum Chemical Calculations, X-ray Structural Characterization, and Raman Spectroscopic Measurements

1998 ◽  
Vol 37 (11) ◽  
pp. 2633-2644 ◽  
Author(s):  
María J. Mayor-López ◽  
Jacques Weber ◽  
Kaspar Hegetschweiler ◽  
Marc D. Meienberger ◽  
Felix Joho ◽  
...  
Keyword(s):  
Quantum Chemical Calculations ◽  
Structural Characterization ◽  
Quantum Chemical ◽  
Spectroscopic Measurements ◽  
X Ray ◽  
Raman Spectroscopic

scholarly journals A study of in vitro antibacterial activity of lanthanides complexes with a tetradentate Schiff base ligand

2013 ◽  
Vol 3 (5) ◽  
pp. 367-370 ◽  
Author(s):  
Waleed Mahmoud Al Momani ◽  
Ziyad Ahmed Taha ◽  
Abdulaziz Mahmoud Ajlouni ◽  
Qasem Mohammad Abu Shaqra ◽  
Muaz Al Zouby
Keyword(s):  
Antibacterial Activity ◽  
Schiff Base ◽  
Schiff Base Ligand ◽  
Tetradentate Schiff Base ◽  
In Vitro Antibacterial Activity ◽  
Lanthanides Complexes
Sign in / Sign up

Export Citation Format

Share Document