Mononuclear manganese(iii) complexes of bidentate NO donor Schiff base ligands: synthesis, structural characterization, magnetic and catecholase studies

RSC Advances ◽  
2015 ◽  
Vol 5 (30) ◽  
pp. 23855-23864 ◽  
Author(s):  
Arpan Dutta ◽  
Surajit Biswas ◽  
Malay Dolai ◽  
Bikash Kumar Shaw ◽  
Abhishake Mondal ◽  
...  
Keyword(s):  
Schiff Base ◽  
Structural Characterization ◽  
Schiff Base Ligands ◽  
No Donor

We have synthesized four mononuclear manganese(iii) complexes (1–4) of four closely related bidentate NO donor Schiff-base ligands, out of which three (2–4) were structurally characterized.

scholarly journals SYNTHESIS AND STRUCTURAL CHARACTERIZATION OF PALLADIUM(II) COMPLEXES WITH TETRADENTATE N2O2 AND BIDENTATE NO-DONOR SALICYLALDEHYDE SCHIFF BASE LIGANDS

2018 ◽  
Vol 55 (5B) ◽  
pp. 86
Author(s):  
Lam Quang Hai
Keyword(s):  
Schiff Base ◽  
Structural Characterization ◽  
Schiff Base Ligands ◽  
No Donor ◽  
Esi Ms ◽  
Tert Butyl ◽  
High Yields

In this study, a salen-type (R)- and (S)-N-5-tert-butyl-salicylidene-1-phenylethylamine Schiff base ligands and their Pd(II) complexes were synthesized and characterized by ESI-MS, IR and NMR spectroscopies. The ligands were synthesized from the condensation of ethylenediamine with 5-fluoro-salicylaldehyde and (R)- or (S)-1-phenylethylamine with 5-tert-butyl-salicylaldehyde with high yields of 96,3-97.5 %. Their corresponding Pd(II) complexes were formed with yields around 76 %.

Syntheses, characterizations and structures of NO donor Schiff base ligands and nickel(II) and copper(II) complexes

2011 ◽  
Vol 997 (1-3) ◽  
pp. 53-59 ◽  
Author(s):  
Cemal Şenol ◽  
Zeliha Hayvali ◽  
Hakan Dal ◽  
Tuncer Hökelek
Keyword(s):  
Schiff Base ◽  
Schiff Base Ligands ◽  
No Donor

scholarly journals Antibacterial Co(II), Ni(II), Cu(II) and Zn(II) complexes with biacetyl-derived Schiff bases

2010 ◽  
Vol 75 (8) ◽  
pp. 1075-1084 ◽  
Author(s):  
Muhammad Imran ◽  
Mitu Liviu ◽  
Shoomaila Latif ◽  
Zaid Mahmood ◽  
Imtiaz Naimat ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Schiff Base ◽  
Metal Complexes ◽  
Schiff Bases ◽  
Bacterial Species ◽  
Electronic Spectroscopy ◽  
Salmonella Typhi ◽  
Schiff Base Ligands ◽  
No Donor

The condensation reactions of biacetyl with orthohydroxyaniline and 2-aminobenzoic acid to form bidendate NO donor Schiff bases were studied. The prepared Schiff base ligands were further utilized for the formation of metal chelates having the general formula [ML2.2H2O] where M = Co(II), Ni(II), Cu(II) and Zn(II) and L = HL1 and HL2. These new compounds were characterized by conductance measurements, magnetic susceptibility measurements, elemental analysis, and IR, 1H-NMR and electronic spectroscopy. Both Schiff base ligands were found to have a mono-anionic bidentate nature and octahedral geometry was assigned to all metal complexes. All the complexes contained coordinated water which was lost at 141-160 ?C. These compounds were also screened for their in-vitro antibacterial activity against four bacterial species, namely; Escherichia coli, Staphylococcus aureus, Salmonella typhi and Bacillus subtillis. The metal complexes were found to have greater antibacterial activity than the uncomplexed Schiff base ligands.

Synthesis and structural characterization of m-terphenyl Schiff base ligands and their aluminum complexes

2004 ◽  
Vol 82 (9) ◽  
pp. 1346-1352 ◽  
Author(s):  
Diane A Dickie ◽  
Hanifa Jalali ◽  
Rahul G Samant ◽  
Michael C Jennings ◽  
Jason AC Clyburne
Keyword(s):  
Schiff Base ◽  
Schiff Bases ◽  
Structural Characterization ◽  
Condensation Reaction ◽  
Schiff Base Ligands ◽  
X Ray ◽  
X Ray Crystallography ◽  
Aluminum Complexes

2,4,6-Triphenylbenzaldehyde 1 undergoes a condensation reaction with 2-aminophenol to give N-(2′,4′,6′-triphenylbenzylidene)-2-iminophenol (TPIP) 2. The imine 2 can be reduced with NaBH4 in ethanol to form N-(2′,4′,6′-triphenylbenzyl)-2-aminophenol (TPAP) 3. Addition of trimethylaluminum to 2 or 3 results in the formation of the complexes TPIP-AlMe2·AlMe3 (4) or TPAP-AlMe2 (5). Compounds 2, 3, and 4 have been crystallographically characterized.Key words: N,O ligands, aluminum, m-terphenyl, Schiff bases, X-ray crystallography.

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