Stereochemistry and electronic structure of oxovanadium(IV) chelates with tetradentate Schiff base ligands derived from 1,3-diamines

Farmer, Richard L.; Urbach, F. L.

doi:10.1021/ic50133a017

Cited by 164 publications

(34 citation statements)

References 37 publications

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“…The 'g' value indicates that the unpaired electron lies predominantly in the d x 2 Ày 2 orbital [27]. Mononuclear nature of the complex was also evident from the absence of a half field signal, due to m s = ± 2 transitions, ruling out any Cu-Cu interaction [28].…”

Section: Epr Spectramentioning

confidence: 95%

N-(salicylidene)nitrosophenylglycine Schiff base as NOOO-donor towards transition metal ions

Gudasi

Patil

Vadavi

et al. 2006

Transition Met Chem

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A new tetradentate NOOO-donor ligand, N-(salicylidene)nitrosophenylglycine (H 2 snpg) has been designed, synthesized and structurally characterized. Copper(II), nickel(II), cobalt(II), manganese(II) and zinc(II) complexes of H 2 snpg have been prepared for the first time. The authenticities of the ligand and its metal complexes have been established on the basis of elemental analyses, molar conductance measurements, magnetic properties, spectral (i.r., 1 H-n.m.r., u.v.-vis. and mass) studies. The i.r. spectral studies of all the complexes exhibit a similar feature about the ligating nature of the ligand to the metal ions and revealed that the ligand has coordinated through the carbonyl oxygen, azomethine nitrogen, nitroso oxygen and deprotonated hydroxyl oxygen. The molar conductance data suggest them to be non-electrolytes. The antimicrobial activity of all the compounds was studied against Escherichia coli, Bacillus cirroflagellosus, Aspergillus niger and Candida albicans. All the complexes have shown a moderate to high fungal activity compared to the ligand.

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Section: Epr Spectramentioning

confidence: 95%

N-(salicylidene)nitrosophenylglycine Schiff base as NOOO-donor towards transition metal ions

Gudasi

Patil

Vadavi

et al. 2006

Transition Met Chem

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show abstract

“…The 'g iso ' values at 300 and 77 K are 2.163 and 2.053, respectively. The mononuclear nature of the complex was also evident from the absence of a half field signal, due to m s =±2 transitions, ruling out any Cu-Cu interaction [13].…”

Section: Epr Spectramentioning

confidence: 98%

X-ray Crystal Structure of the N-(2-hydroxy-1-naphthalidene)phenylglycine Schiff Base. Synthesis and Characterization of its Transition Metal Complexes

Gudasi

Patil

Vadavi

et al. 2006

Transition Met Chem

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The design and synthesis of the new amino acid Schiff base, N-(2-hydroxy-1-naphthalidene)phenylglycine (Hhnpg) has been described along with the single crystal X-ray crystallographic studies. Copper(II), nickel(II), cobalt(II), manganese(II) and zinc(II) complexes of Hhnpg were synthesized for the first time, and were characterized on the basis of elemental analysis, conductivity measurements, spectral (i.r., 1 H-n.m.r., u.v.-vis., e.p.r.), magnetic and thermal studies. The i.r. spectral studies of all the complexes exhibit a similar feature about the ligating nature of the ligand to the metal ions and reveal that the ligand has coordinated through the carbonyl oxygen, azomethine nitrogen and deprotonated hydroxyl oxygen. The conductance data of the complexes suggest them to be nonelectrolytes. The microbial activity of the ligand and the complexes was investigated.

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“…The bands at 625 and 715 nm are assigned to dxy → dyz, dxz, typical of square pyramidal geometry of VO(IV) complex. 36,38 The bands at 415 and 368 nm are assigned to M → L and intraligand and CT bands respectively.…”

Section: Electronic Spectral Studiesmentioning

confidence: 99%

Reactions of 2-thioxoper hydro-1, 3-thiazin-4 ones with Oxovanadium (IV), Chromium (III), Manganese (II), Iron (II) and Iron (III)

Singh¹,

Singh²,

Singh³

2012

Orientjchem.

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Stereochemistry and electronic structure of oxovanadium(IV) chelates with tetradentate Schiff base ligands derived from 1,3-diamines

Cited by 164 publications

References 37 publications

N-(salicylidene)nitrosophenylglycine Schiff base as NOOO-donor towards transition metal ions

N-(salicylidene)nitrosophenylglycine Schiff base as NOOO-donor towards transition metal ions

X-ray Crystal Structure of the N-(2-hydroxy-1-naphthalidene)phenylglycine Schiff Base. Synthesis and Characterization of its Transition Metal Complexes

Reactions of 2-thioxoper hydro-1, 3-thiazin-4 ones with Oxovanadium (IV), Chromium (III), Manganese (II), Iron (II) and Iron (III)

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