Organotellurium carboxylates and related compounds: Structural and synthetic considerations

Pant, Bhuvan C.; McWhinnie, William R.; Dance, Nigel S.

doi:10.1016/s0022-328x(73)80043-9

Cited by 30 publications

(8 citation statements)

References 18 publications

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“…The vibrational spectra of the ligand exhibit the characteristic bands 2,37,64,68 , one at 1619 cm -1 of azomethine υ (C=N) group and another at 3052 cm -1 , of phenolic υ (OH) group. While in the complexes υ (C=N) bands were shifted to lower frequency region 2,13,64,68,69,70 i.e. 1605-1613 cm -1 indicating a decrease in the C=N bond strength due to the formation of coordinate bond of the metal with the imine nitrogen lone pair 71,72 .…”

Section: Infrared Spectramentioning

confidence: 93%

Tellurium(IV) Complexes Containing Bidentate Schiff Base and their Biological Activities

2018

Chem Sci Trans

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Monobasic (ON) bidentate Schiff base ligand has been prepared by condensing o-hydroxybenzaldehyde with 3-aminopyridine. The new organyltellurium(IV) complexes, having formula [TeCl 3 (3-APY-{Sal})], [RTeCl 2 (3-APY-{Sal})] and [R 2 TeCl(3-APY-{Sal})] have been synthesized by reacting equimolar ratio of Schiff base (3-APY-{SalH}) with TeCl 4 , RTeCl 3 and R 2 TeCl 2 : where R=4-methoxyphenyl, 4-hydroxyphenyl, 3-methyl-4-hydroxyphenyl. The characterization of Schiff base and its complexes were carried out by elemental analyses, conductivity measurements, FTIR and 1 H NMR spectral studies. Also, the biological activities (antifungal and antibacterial) of the Schiff base ligand and some of its tellurium(IV) complexes have been studied.

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Section: Infrared Spectramentioning

confidence: 93%

Tellurium(IV) Complexes Containing Bidentate Schiff Base and their Biological Activities

2018

Chem Sci Trans

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“…The IR spectrum of the ligand indicate that the υ (C=N) band 31,38,41,66,70 of the ligand at 1613 cm -1 is due to the azomethine linkage which were shifted towards lower frequency 22,38,41,66,[70][71][72] indicating that the ligand coordinate to tellurium metal ions via the azomethine nitrogen 73,74 .…”

Section: Infrared Spectramentioning

confidence: 99%

N-(2-Pyridyl)-5-chlorosalicylideneimine Schiff Base and its Tellurium(IV) Complexes: Synthesis, Characterization and In Vitro Biological Activities

2018

Chem Sci Trans

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“…No. The two new bands appear in range 281-293 cm -1 and 415-425 cm -1 assigned due to ν (Te-O) [49][50][51][52] and ν (Te-N) mode 53 of vibration. Thus, IR data predict the bidentate nature of the Schiff base (VL-AAP) involving azomethine nitrogen atom and carbonyl oxygen of pyrazolone ring give rise to six membered chelate rings with the tellurium centre having distorted octahedral geometry.…”

Section: Compoundmentioning

confidence: 99%

New Aryltellurium(IV) Complexes Containing NO Donor Schiff Base Derived from Vanillin and 4-Aminoantipyrine

2017

Chem Sci Trans

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A novel bidentate Schiff base derived from vanillin and 4-aminoantipyrine, form 1:1 complexes with aryltellurium(IV) trichlorides and diaryltellurium(IV) dichlorides of the type VL-AAP.ArTeCl 3 and VL-AAP.Ar 2 TeCl 2 (where Ar = p-methoxyphenyl, p-ethoxyphenyl, p-hydroxyphenyl and 3-methyl-4-hydroxyphenyl and VL-AAP =Schiff base). These complexes have been characterized by elemental analyses, molar conductance, IR and 1 H NMR spectroscopy. On the basis of these studies the donor sites have been identified as carbonyl oxygen of the pyrazolone ring and nitrogen atom of azomethine group (CH=N) to give five membered chelate ring with tellurium centre having Ψ-octahedral geometry. The synthesized ligand and its aryltellurium complexes were screened for their antimicrobial activity against various bacterial and fungal strains.

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Organotellurium carboxylates and related compounds: Structural and synthetic considerations

Cited by 30 publications

References 18 publications

Tellurium(IV) Complexes Containing Bidentate Schiff Base and their Biological Activities

Tellurium(IV) Complexes Containing Bidentate Schiff Base and their Biological Activities

N-(2-Pyridyl)-5-chlorosalicylideneimine Schiff Base and its Tellurium(IV) Complexes: Synthesis, Characterization and In Vitro Biological Activities

New Aryltellurium(IV) Complexes Containing NO Donor Schiff Base Derived from Vanillin and 4-Aminoantipyrine

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