Synthesis of Chromium(III) Chelates of Some Newly Synthesized Heterocyclic Teiradentate Schiff Bases

Raj, Desh; Shah, Purvesh J.; Shah, J. R.

doi:10.1080/15533179208020467

Cited by 16 publications

(7 citation statements)

References 8 publications

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“…The absence of any band below 10,000 cm 21 ruled out the possibility of a tetrahedral structure of the chelate. The green color of the chelate also confirms the distorted tetrahedral structure of the Cu(II) chelate (Figgis and Lewis, 1966;Geary, 1971;Raj et al, 1992).…”

Section: Diffuse Reflectance Spectra (Drs)mentioning

confidence: 61%

“…The Cr(III) and Fe(III) chelate show bands at 1420, 720, and 998 cm 21 , which may be assigned to n 1 , n 2 , n 3 absorption of n(NO 3 ) (Raj et al,1992). The OV(IV) chelate shows a band in the region 930-970 cm 21 , which may be due to n(V5 5O) Shah, 1985a, 1985b).…”

Section: Infrared Spectral Datamentioning

confidence: 91%

“…5 E g transition. However, the marked departure of the observed spectra from that of regular octahedron Fe(III), consisting of more than one band, may be due to the presence of spin-orbit coupling, distortion of the octahedron state and Jahn-Teller effect (Raj et al,1992;Selbin, 1965).…”

Section: Diffuse Reflectance Spectra (Drs)mentioning

confidence: 95%

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Oxovanadium(IV), Cr(III), Fe(III), Fe(II), Ni(II), Cu(II), Zn(II), and UO2(VI) Chelates from Onno Donor Schiff Base Ligand

Jadeja¹,

Parmar²

2005

LSRT

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Oxovanadium(IV), Cr(III), Fe(III), Fe(II), Ni(II), Cu(II), Zn(II) and UO 2 (VI) chelates of an ONNO donor Schiff base ligand derived from 4-butyryl-1,3diphenyl-2-pyrozolin-5-one and urea were prepared and characterized by elemental analyses, thermogravimatric analyses (TGA), conductivity, magnetic susceptibility, infrared and electronic spectral measurements. The molar conductivities of the chelates show that they are non-electrolytes, except the Cr(III) and Fe(III) chelates, which are 1:1 electrolytes. The ONNO donor set of the ligand is inferred from its infrared and NMR spectral studies. The magnetic moments and electronic spectral data suggest a distorted tetragonal geometry for the Cu(II) chelate and an octahedral geometry for the rest of the chelates.

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Section: Diffuse Reflectance Spectra (Drs)mentioning

confidence: 61%

Section: Infrared Spectral Datamentioning

confidence: 91%

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Oxovanadium(IV), Cr(III), Fe(III), Fe(II), Ni(II), Cu(II), Zn(II), and UO2(VI) Chelates from Onno Donor Schiff Base Ligand

Jadeja¹,

Parmar²

2005

LSRT

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“…Schiff bases derived from -diketone and primary amine provide imino or ketimino with hydroxyl for coordination [1][2][3][4][5][6][7]. There are many reports on metal chelates of this class of compounds but very little on the bisketimino compound derived from heterocyclic -diketone [1][2][3][4][5], which give ONNO donor array towards metal ions.…”

Section: Introductionmentioning

confidence: 99%

“…There are many reports on metal chelates of this class of compounds but very little on the bisketimino compound derived from heterocyclic -diketone [1][2][3][4][5], which give ONNO donor array towards metal ions. We have previously reported Cr(III) and Ni(II) chelates of Schiff bases derived from 4-acetyl-3-methyl-1-phenyl-2-pyrazolin-5-one [1,3] and report here the cobalt(II) and nickel(II) chelates of Schiff bases derived from 4-butyryl-3-methyl-1-phenyl-2-pyrazolin-5-one with o-, m-, p-phenylenediamine, benzedine, and ethylenediamine. A general structural representation and abbreviations of the ligands used are given in figure 1.…”

Section: Introductionmentioning

confidence: 99%

Cobalt(II) and nickel(II) chelates of some 5-pyrazolone-based, Schiff-base ligands

Parmar

Teraiya

2009

Journal of Coordination Chemistry

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The cobalt(II) and nickel(II) chelates of Schiff bases, derived by condensing 4-butyryl-3-methyl-1-phenyl-2-pyrazolin-5-one (BMPP) with o-, m-, p-phenylenediamine, benzidine, and ethylenediamine have been synthesized and characterized by elemental analyses, thermogravimetric analyses (TGA), conductance data, magnetic measurements, IR, 1 H NMR, 13 C NMR, mass, and electronic spectroscopies. Each of the Schiff bases was an ONNO donor to metal forming chelates formulated as [M(L)(H 2 O) 2 ] n with M ¼ Ni(II) and Co(II) and L is the di-anion of the Schiff base. The monomeric (n ¼ 1) and dimeric (n ¼ 2) species of these metal chelates, based on available evidence, are suggested.

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Schiff base pyrazolone complexes of iron (III): synthesis, characterization, antimicrobial and antioxidant activity

Surati

Sathe

2016

Med Chem Res

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Synthesis of Chromium(III) Chelates of Some Newly Synthesized Heterocyclic Teiradentate Schiff Bases

Cited by 16 publications

References 8 publications

Oxovanadium(IV), Cr(III), Fe(III), Fe(II), Ni(II), Cu(II), Zn(II), and UO2(VI) Chelates from Onno Donor Schiff Base Ligand

Oxovanadium(IV), Cr(III), Fe(III), Fe(II), Ni(II), Cu(II), Zn(II), and UO2(VI) Chelates from Onno Donor Schiff Base Ligand

Cobalt(II) and nickel(II) chelates of some 5-pyrazolone-based, Schiff-base ligands

Schiff base pyrazolone complexes of iron (III): synthesis, characterization, antimicrobial and antioxidant activity

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