Synthesis, Characterization, and Antimicrobial Activities of Some Transition Metal Complexes With a Tridentate Dibasic Schiff Base and Bidentate 2,2′-Bipyridylamine

Patel, Ketan M.; Patel, K. N.; Patel, Nilesh H.; Patel, Mohan N.

doi:10.1081/sim-100002043

Cited by 25 publications

(10 citation statements)

References 8 publications

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“…The ligand contains four potential donor sites: phenolic oxygen; azomethine nitrogen; (N-O). These values are in agreement with similar compounds [17,18]. The azomethine vibration of the ligand at 1644 cm -1 was at ~1617-1635 cm -1 for the complexes.…”

Section: Resultssupporting

confidence: 89%

Studies on Mononuclear Chelates Derived from Substituted Schiff Bases Ligands (Part 3). Synthesis and Characterization of a New 5-Nitrosalicylidene-p-aminoacetophenoneoxime and Its Complexes with Co(II), Ni(II), Cu(II), and Zn(II)

Canpolat

Kaya

2005

Russ J Coord Chem

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A new ligand, 5-nitrosalicylidene-p -aminoacetophenoneoxime (HL), was synthesized from p -aminoacetophenoneoxime and 5-nitrosalicylaldehyde under reflux in absolute EtOH at 60 ° C for 3 h. Mononuclear complexes with a metal : ligand ratio of 1 : 2 were prepared with Co II , Ni II , Cu II , and Zn II salts. Their structures were determined on the basis of elemental analyses, IR, 1 H and 13 C NMR, electronic spectra, magnetic susceptibility measurements, molar conductivity, and thermogravimetric analyses. According to the results, two ligands were suggested to be coordinated to each metal atom by phenolic oxygen and imino nitrogen to form high-spin tetrahedral complexes with cobalt(II), nickel(II), and copper(II) while forming a diamagnetic complex with zinc(II).

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Section: Resultssupporting

confidence: 89%

Studies on Mononuclear Chelates Derived from Substituted Schiff Bases Ligands (Part 3). Synthesis and Characterization of a New 5-Nitrosalicylidene-p-aminoacetophenoneoxime and Its Complexes with Co(II), Ni(II), Cu(II), and Zn(II)

Canpolat

Kaya

2005

Russ J Coord Chem

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“…4 T 1g ( 4 G) (n 1 ), 6 A 1g ! 3 T 2g (F) (n 1 ), 3 A 2g (F) ! 4 A 1g , 4 E g ( 4 G) (n 3 ) transitions in order of increasing energy.…”

Section: Electronic Spectramentioning

confidence: 99%

Metal Complexes: Preparation, Magnetic, Spectral, and Biocidal Studies of Some Mixed‐Ligand Complexes with Schiff Bases Containing NO and NN Donor Atoms

Dholakiya

Patel

2004

Synthesis and Reactivity in Inorganic and Metal-Organic Chemist

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Metal complexes of the types [M(SB 1 ) 2 acphen] and [M(SB 2 ) 2 acphen] where M ¼ Mn(II), Co(II), Ni(II), Cu(II), and Cd(II); HSB 1 ¼ 5-chlorosalicylidene-p-anisidine and HSB 2 ¼ 5-bromosalicylidene-panisidine have been prepared and characterized. Magnetic susceptibility measurements, elemental analyses, electro-nic, and infrared spectral data suggest six-coordinated octahedral structures for these complexes. The mixed-ligand complexes show higher activity against Saccharomyces cereuisae, Salmonella typhi, Fasarium oxysporum, 553 ORDER REPRINTSand Lasiodiplodia theobromae as compared to the ligand, metal salts, and control.

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“…The research interests in hydroxyl-substituent Schiff bases have mainly focused on their application for complex catalysis, 1,2 antimicrobial and anticorrosion actions, 3,4 spectroscopy and chromatography, 5,6 oxidation, 7 and pharmaceutics. 8,9 Because the attachment of hydroxyl groups on the aromatic ring makes the compound a free-radical scavenger, hydroxyl-substituent Schiff bases may be antioxidants to scavenge free radicals, and potential drugs to treat diseases related to free-radical damage.…”

Section: Introductionmentioning

confidence: 99%

Quantitative structure–activity relationship of hydroxyl‐substituent Schiff bases in radical‐induced hemolysis of human erythrocytes

Tang

Liu

2007

Cell Biochemistry & Function

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The major objective of this work was to explore the quantitative structure-activity relationship (QSAR) of hydroxyl-substituent Schiff bases in protecting human erythrocytes against 2,2'-azobis(2-amidinopropane hydrochloride) (AAPH)- induced hemolysis, in which 10 Schiff bases including 4-phenyliminomethylphenol (PIH); 4-((4-hydroxybenzylidene) amino)phenol (PAH); 2-methoxy-4-((4-hydroxyphenylimino)methyl)phenol (PMH); 4-((furan-2-ylmethylene)amino) phenol (FAH); 4-((4-N,N-dimethylaminobenzylidene)amino)phenol (PDH); 2-((4-N,N-dimethylaminobenzylidene)amino) phenol (ODH); 2-(naphthalene-1-yliminomethyl)phenol (NAH); 2-(benzyliminomethyl)phenol (BPH); 1,4-di((2-hydroxyphenylimino) methyl)benzene (DOH); 1,4-di((4-hydroxyphenylimino)methyl)benzene DPH, were available for this in vitro experimental system. The results revealed that the radical-scavenging activity of the --OH attached to the para position of methylene in Schiff base was much lower than that attached to the ortho position of the N atom. The large conjugate system and low steric hindrance in the framework of Schiff base benefit the Schiff base to trap radicals. Meanwhile, since a Schiff base, even without any substituent, can also play an antioxidative role in this experimental system, the QSAR results suggest that hydroxyl-substituent Schiff bases are potential drugs in the treatment of radical-related diseases, and provide more information for designing novel drugs.

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Synthesis, Characterization, and Antimicrobial Activities of Some Transition Metal Complexes With a Tridentate Dibasic Schiff Base and Bidentate 2,2′-Bipyridylamine

Cited by 25 publications

References 8 publications

Studies on Mononuclear Chelates Derived from Substituted Schiff Bases Ligands (Part 3). Synthesis and Characterization of a New 5-Nitrosalicylidene-p-aminoacetophenoneoxime and Its Complexes with Co(II), Ni(II), Cu(II), and Zn(II)

Studies on Mononuclear Chelates Derived from Substituted Schiff Bases Ligands (Part 3). Synthesis and Characterization of a New 5-Nitrosalicylidene-p-aminoacetophenoneoxime and Its Complexes with Co(II), Ni(II), Cu(II), and Zn(II)

Metal Complexes: Preparation, Magnetic, Spectral, and Biocidal Studies of Some Mixed‐Ligand Complexes with Schiff Bases Containing NO and NN Donor Atoms

Quantitative structure–activity relationship of hydroxyl‐substituent Schiff bases in radical‐induced hemolysis of human erythrocytes

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