Bioinorganic Relevance of Some Cobalt(II) Complexes with Thiophene‐2‐glyoxal Derived Schiff Bases

Singh, Prashant; Das, S. S.; Dhakarey, Rajesh

doi:10.1155/2009/801345

Cited by 7 publications

(16 citation statements)

References 13 publications

(9 reference statements)

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“…Further more IR spectra for complexes (13)(14)(15)(16) doesn't show any absorption belong to υ(M-Cl), which means the absence of chloride ions in the complexes, that was proved by sodium fussion test.…”

Section: Ir Spectramentioning

confidence: 89%

“…Complexes of Co(II) with two Schiff bases TEAB [2-hydroxy-4-{[2-oxo-2-(thiophen-2-yl)ethylidene]amino}benzoic acid] and TEPC [N-[2-oxo-2-(thiophen-2-yl)ethylidene]pyridine-3-carboxamide] have been synthesized and characterized by using elemental analysis, magnetic susceptibility, mass spectra, 1 H, 13 C-NMR, IR and electronic spectral data. All these studies reveal the distorted octahedral Co(II) complexes (15) .…”

Section: Introductionmentioning

confidence: 88%

“…The IR spectra of the Zn(II) complex (15) showed intenes bands at 1597 and 1421 cm -1 assigned for asym. υ(COO) and for sym.…”

Section: Ir Spectramentioning

confidence: 99%

“…The complexes were prepared and characterized by molar conductance, IR, UV/vis spectra studies, magnetic measurements and metal content analysis. Conductivity data in DMF for complexes (1-12) and DMSO for complexes (13)(14)(15)(16) showed that all complexes are non-electrolyte. Magnetic moment and electronic spectra indicate that some of the complexes contain a tetrahedral and the other have octahedral environment.…”

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confidence: 99%

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Synthesis and characterization of some new complexes of Co(II), Ni(II), Cu(II), Zn(II), Cd(II), Hg(II) with 2,3 and 3,4- di-(2΄-thiophenoyloxy) aniline

Alasalli¹

2012

J.Edu.Sci.

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A series of new complexes of the type [M(L 1 )Cl 2 ] , [M(L 2 )Cl 2 ] and [M΄(L 1 )(Th) 2 ] where L 1 =2,3-di-(2΄-thiophenoyloxy) aniline, L 2 =3,4-di-(2΄-thiophenoyloxy)aniline, M=Co +2 , Ni +2 , Cu +2 , Zn +2 , Cd +2 and Hg +2 , M΄= Ni +2 , Cu +2 , Zn +2 and Cd +2 , Th=thiophene carboxylate. The complexes were prepared and characterized by molar conductance, IR, UV/vis spectra studies, magnetic measurements and metal content analysis. Conductivity data in DMF for complexes (1-12) and DMSO for complexes (13)(14)(15)(16) showed that all complexes are non-electrolyte. Magnetic moment and electronic spectra indicate that some of the complexes contain a tetrahedral and the other have octahedral environment.

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Section: Ir Spectramentioning

confidence: 89%

Section: Introductionmentioning

confidence: 88%

“…The IR spectra of the Zn(II) complex (15) showed intenes bands at 1597 and 1421 cm -1 assigned for asym. υ(COO) and for sym.…”

Section: Ir Spectramentioning

confidence: 99%

mentioning

confidence: 99%

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Synthesis and characterization of some new complexes of Co(II), Ni(II), Cu(II), Zn(II), Cd(II), Hg(II) with 2,3 and 3,4- di-(2΄-thiophenoyloxy) aniline

Alasalli¹

2012

J.Edu.Sci.

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“…Molecules containing electron-acceptor Schiff bases are of great interest because of their potential therapeutic and pharmacological properties (5-7) and because of their ability to serve as polymeric ultraviolet stabilizers (8). It has been reported that some of these complexes have increased activity when administrated as metal complexes (9) and their interactions with DNA have been reported (10,11).…”

Section: Introductionmentioning

confidence: 99%

Spectroscopic and biological studies of mono- or binuclear complexes derived from thio-Schiff bases of some transition metals

Mahmoud

2010

Journal of Sulfur Chemistry

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Two novel Schiff base ligands, 4,6-bis((E)-1-(2-mercaptophenylimino)ethyl)benzene-1,3-diol, H 4 L a , and 1,2-((E)-1-(6-((E)-1-(2-mercaptophenylimino)ethyl)pyridine-2-yl)ethylideneamino)benzenthiol, H 2 L b , have been synthesized by the condensation of 4,6-diacetyl resorcinol (DAR) or 2,6-diacetyl pyridine (DAP) with 2-aminobenzenthiol (ABT), in the molar ratio 1:2 [1 (DAR or DAP):2 ABT]. The structures of ligands were elucidated by elemental analysis, infrared (IR), UV-VIS as well as 1 H-NMR. Reaction of the Schiff base ligands with the transition metals Co(II), Ni(II), Cu(II), Zn(II), VO(IV) and Ru(III) afforded two series of the corresponding transition metal complexes in the molar ratio 1:2 or 1:1. The ligand, H 4 L a , behaves as tetrabasic hexadentate, which hosts the two metal ions at the centers of two SNO sites, while H 2 L b acts as a compartmental dibasic pentadentate ligand forming mono-or binuclear complexes through the coordinate sites N 3 S 2 . The structures of the newly prepared complexes were characterized on the basis of the elemental analysis, spectroscopic data (IR, UV-VIS, 1 H-NMR and ESR spectra along with magnetic susceptibility measurements) besides the molar conductance measurements and thermal gravimetric analyses. The bonding sites are the azomethane, sulfur atoms and phenolic oxygen for H 4 L a or pyridine nitrogen for H 2 L b . The complexes exhibit mono-or binuclear structures, distorted octahedral, tetrahedral, square planar or square pyramid structure. Synthesized compounds have also been screened for their biological activity against species of pathogenic fungi and bacteria and were found to possess appreciable fungicidal and bactericidal properties.

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Potential Hemilabile (Imino)pyridine Palladium(II) Complexes as Selective Ethylene Dimerization Catalysts: An Experimental and Theoretical Approach

2015

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The (imino)pyridine ligands bearing pendant arms 2-methoxy-N-(1-(pyridin-2-yl)ethylidene)ethanamine (L1), 2-methoxy-N-((pyridin-2-yl)methylene)ethanamine (L2), 3-methoxy-N-((pyridin-2-yl)methylene)propan-1-amine (L3), N,N-diethyl-N-((pyridin-2-yl)methylene)ethane-1,2-diamine (L4), and N-((6-bromopyridin-2-yl)methylene)-2-methoxyethanamine (L5) were synthesized by condensation of the appropriate aldehyde and the corresponding amines. Reactions of L1−L5 with [PdCl(Me)(cod)] afforded the corresponding palladium complexes [PdCl(Me)(L1)] (1), [PdCl(Me)(L2)] (2), [PdCl(Me)(L3)] (3), [PdCl(Me)(L4)] (4), and [PdCl(Me)(L5)] (5) in good yields. Treatment of the neutral complexes 1−5 with one molar equivalent of Na[BAr 4 ] (Ar = 3,5-(CF 3 ) 2 C 6 H 3 ) led to in situ formation of the corresponding cationic compounds [Pd(Me) 4a), and [Pd(Me)(L5)] + (5a). In the presence of ethylene, the catalyst systems 1−5/MAO and 1a−5a exhibited high catalytic activities in selective ethylene dimerization producing mainly butenes. 1 H NMR spectroscopy and DFT studies provided valuable insight into the role of ligand architecture on ethylene-binding energies, catalytic activities, and stabilities of the resultant catalysts.

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Bioinorganic Relevance of Some Cobalt(II) Complexes with Thiophene‐2‐glyoxal Derived Schiff Bases

Cited by 7 publications

References 13 publications

Synthesis and characterization of some new complexes of Co(II), Ni(II), Cu(II), Zn(II), Cd(II), Hg(II) with 2,3 and 3,4- di-(2΄-thiophenoyloxy) aniline

Synthesis and characterization of some new complexes of Co(II), Ni(II), Cu(II), Zn(II), Cd(II), Hg(II) with 2,3 and 3,4- di-(2΄-thiophenoyloxy) aniline

Spectroscopic and biological studies of mono- or binuclear complexes derived from thio-Schiff bases of some transition metals

Potential Hemilabile (Imino)pyridine Palladium(II) Complexes as Selective Ethylene Dimerization Catalysts: An Experimental and Theoretical Approach

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