Nitric oxide (NO) reactivity studies on mononuclear iron(ii) complexes supported by a tetradentate Schiff base ligand

RSC Advances ◽  
2016 ◽  
Vol 6 (116) ◽  
pp. 115326-115333 ◽  
Author(s):  
Nidhi Tyagi ◽  
Ovender Singh ◽  
Udai P. Singh ◽  
Kaushik Ghosh
Keyword(s):  
Nitric Oxide ◽  
Schiff Base ◽  
Schiff Base Ligand ◽  
Iron Complex ◽  
Mononuclear Iron ◽  
Tetradentate Schiff Base ◽  
Tetradentate Ligands ◽  
Vis Spectroscopy

Mononuclear iron(ii) complexes were synthesised and characterized from tetradentate ligands. The reactivity of NO afforded ligand nitrated iron(ii) complex along with the in situ formation of an unstable nitrosylated iron complex which was monitored by UV-vis spectroscopy.

Synthesis and Crystal Structures of a New μ-Bis(tetradentate) Schiff Base Ligand and its Mononuclear Iron(III) Complex: Iron(III) Induced Imidazolidine Ring Hydrolysis of Binucleating Schiff Base Ligand

2005 ◽  
Vol 60 (5) ◽  
pp. 520-526 ◽  
Author(s):  
C. T. Zeyrek ◽  
A. Elmali ◽  
Y. Elerman
Keyword(s):  
Crystal Structure ◽  
Schiff Base ◽  
Crystal Structures ◽  
Schiff Base Ligand ◽  
Minimum Energy ◽  
Mononuclear Iron ◽  
Tetradentate Schiff Base ◽  
Oxygen Donor ◽  
Distorted Octahedral Coordination Geometry ◽  
Distorted Octahedral

The μ-bis(tetradentate) ligand, [C27H26Cl3N4O4], H3L′, 1,3-bis[N-(5-chloro-2-hydroxybenzylidene)- 2-aminoethyl]-2-(5-chloro-2-hydroxyphenyl)imidazolidine and its mononuclear iron(III) complex, [Fe(L)](ClO4), L = N, N′-bis(5-chloro-2-hydroxybenzylidene)-triethylenetetramine have been synthesized and their crystal structures determined. Minimum energy conformations of the ligand were calculated (MOPAC, AM1) as a function of two torsion angles and the results compared with optimized crystal structure. The ligand (H3L′) reacts with Fe(ClO4)2 · 6H2O in aqueous methanol to form the mononuclear [Fe(L)](ClO4) complex with the imidazolidine ring cleaved by hydrolysis. The complex has an N4O2 donor atom set forming a distorted octahedral coordination geometry around the metal atom as established from a crystal structure determination. The terminal oxygen donor atoms occupy cis positions, and the remaining four nitrogen atoms (two cis amine and two trans imine) complete the coordination sphere.

scholarly journals Synthesis and Crystal Structure of [MnIII(5-Br-salpn)(DMF)2][B(C6H5)4]

2013 ◽  
Vol 2013 ◽  
pp. 1-4
Author(s):  
Thampidas V. S ◽  
Aisha Basheer ◽  
Saliny Shyla
Keyword(s):  
Crystal Structure ◽  
Schiff Base ◽  
Schiff Base Ligand ◽  
Synthesis And Crystal Structure ◽  
Tetradentate Schiff Base ◽  
Octahedral Environment ◽  
Distorted Octahedral ◽  
Cell Dimensions ◽  
Unit Cell Dimensions

The title compound was synthesized by the reaction between a manganese(II) carboxylate and the tetradentate Schiff base ligand, 5-Br-salpnH2 [N,N′-bis(5-Br-salicylidene)-1,3-diaminopropane] produced in situ. The complex crystallizes in the P21/c space group with unit cell dimensions a=12.37980(10), b=12.60990(10), c=28.9438(3), α=90.00, β=102.0130(10), and γ=90.00. The manganese(III) ion is in a distorted octahedral environment with longer axial bonds.

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.

Vanadium(III)-carbon and titanium(III)-carbon functionalities supported by a tetradentate Schiff base ligand

1990 ◽  
Vol 29 (20) ◽  
pp. 3991-3996 ◽  
Author(s):  
Jean Marie Rosset ◽  
Carlo Floriani ◽  
Marinella Mazzanti ◽  
Angiola Chiesi-Villa ◽  
Carlo Guastini
Keyword(s):  
Schiff Base ◽  
Schiff Base Ligand ◽  
Tetradentate Schiff Base

Nickel(II) complex with an asymmetric tetradentate Schiff base ligand: synthesis, characterization, crystal structure, and DFT studies

2018 ◽  
Vol 71 (22) ◽  
pp. 3748-3762 ◽  
Author(s):  
Vajiheh Torabi ◽  
Hadi Kargar ◽  
Alireza Akbari ◽  
Reza Behjatmanesh-Ardakani ◽  
Hadi Amiri Rudbari ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Schiff Base ◽  
Schiff Base Ligand ◽  
Dft Studies ◽  
Tetradentate Schiff Base ◽  
Ligand Synthesis
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