Investigation into aroylhydrazones as chelating agents. Synthesis and structural characterization of a tin(IV) complex with 2,6-diacetylpyridine bis(salicyloylhydrazone)

Pelizzi, Corrado; Pelizzi, Giancarlo

doi:10.1039/dt9800001970

Cited by 53 publications

(37 citation statements)

References 3 publications

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“…Although three transitions are expected in this case, they are very close in energy and often appear in the form of one broad band envelope. The occurrence 4 T 1g ! 4 A 2g (m 2 ) and 4 T 1g (F) fi 4 T 1g (P) (m 3 ) transitions, respectively, in an octahedral geometry around the cobalt(II) ion [32].…”

Section: Magnetic and Electronic Spectral Studiesmentioning

confidence: 99%

“…Various 2,6-diacetylpyridine bis(hydrazones) have adopted octahedral or pentagonal bipyramidal geometry on coordination with transition metal ions [4,[7][8][9][10][11][12][13]. However, the nature of coordination depends also on the metal ion, pH of the medium, reaction conditions and also the nature of the hydrazone etc.…”

Section: Introductionmentioning

confidence: 99%

“…The chelating properties of 2,6-diacetylpyridine bis(hydrazones) have been investigated towards several metal ions [2][3][4][5][6]. Various 2,6-diacetylpyridine bis(hydrazones) have adopted octahedral or pentagonal bipyramidal geometry on coordination with transition metal ions [4,[7][8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

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Synthesis and Spectral Investigation of Some Transition Metal Complexes Containing Pentadentate Macroacyclic NNNNN-donor Schiff Base Ligands

Gudasi

Patil

Vadavi

et al. 2005

Transition Met Chem

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A new Schiff base, 2,6-diacetylpyridine bis(2-hydrazinobenzothiazole) (DPHB), has been designed, and synthesized by the condensation of 2,6-diacetylpyridine with 2-hydrazinobenzothiazole, and structurally characterized. Copper(II), cobalt(II), nickel(II), manganese(II), zinc(II), cadmium(II) and oxovanadium(IV) complexes of DPHB have been synthesized for the first time. Their structures have been elucidated on the basis of elemental analyses, conductance measurements, magnetic properties, spectral (i.r., 1 H-n.m.r., u.v.-vis., e.p.r. and FAB-mass) and thermal studies. The complexes exhibit an octahedral geometry around the metal centre. The conductance data of all the complexes suggest them to be 1:1 electrolytes. The X-band e.p.r. spectra of the copper(II) and oxovanadium(IV) complexes in the polycrystalline state at room (300 K) and liquid nitrogen temperature (77 K) were recorded and their salient features are reported. Thermal stabilities of the manganese(II) and zinc(II) complexes have been studied.

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Section: Magnetic and Electronic Spectral Studiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Synthesis and Spectral Investigation of Some Transition Metal Complexes Containing Pentadentate Macroacyclic NNNNN-donor Schiff Base Ligands

Gudasi

Patil

Vadavi

et al. 2005

Transition Met Chem

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“…The coordination properties of heterocyclic hydrazones have extensively been investigated [1][2][3][4][5][6]. They constitute an important class of biologically active molecules, which have attracted attention due to their wide-ranging pharmacological applications such as antitubercular agents and iron chelators [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Synthesis, spectroscopic characterization and crystal structure of mixed ligand Ni(II) complex of N-4-diethylaminosalicylidine-N′-4-nitrobenzoyl hydrazone and 4-picoline

2006

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A novel mixed ligand nickel complex [NiLB] [H 2 L-N-4-diethylaminosalicylidine-N -4-nitrobenzoyl hydrazone and B-4-picoline] has been synthesized and characterized by elemental analysis, IR spectrum, UV-Vis spectrum and structure has been confirmed by single crystal X-ray structure analysis. The crystal structure reveals that the complex adopts distorted square planar structure with ONO donor atoms of primary ligand and N donor atom of the secondary ligand 4-picoline.

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“…1 Especial the 2,4-dinitrophenylhydrazones exhibit good nonlinear optical (NLO) [2][3][4] and crystalline properties. [5][6][7][8][9] They are found to have versatile coordinating abilities towards different metal ions. In addition, some 2,4-dinitrophenylhydrazone derivatives have been shown to be potentially DNA-damaging and mutagenic agents.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Crystal Structure and Quantum Chemistry of a Novel Schiff Base N-(2,4-Dinitro-phenyl)-N'-(1-phenyl-ethylidene)-hydrazine

Ji¹,

Shi²,

Zhao³

et al. 2010

Bulletin of the Korean Chemical Society

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A novel Schiff base N- (2,4-dinitro-phenyl)-N'-(1-phenyl-ethylidene)-hydrazine has been synthesized and structurally characterized by X-ray single crystal diffraction, elemental analysis, IR spectra and UV-vis spectrum. The crystal belongs to monoclinic with space group P21/n. The molecules are connected via intermolecular O-H···O hydrogen bonds into 1D infinite chains. The crystal structure is consolidated by the intramolecular N-H···O hydrogen bonds. weak intermolecular C-H···O hydrogen bonds link the molecules into intriguing 3D framework. Furthermore, Density functional theory (DFT) calculations of the structure, stabilities, orbital energies, composition characteristics of some frontier molecular orbitals and Mulliken charge distributions of the title compound were performed by means of Gaussian 03W package and taking B3LYP/6-31G(d) basis set. The time-dependent DFT calculations have been employed to calculate the electronic spectrum of the title compound, and the UV-vis spectra has been discussed on this basis. The results show that DFT method at B3LYP/6-31G(d) level can well reproduce the structure of the title compound.

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Investigation into aroylhydrazones as chelating agents. Synthesis and structural characterization of a tin(IV) complex with 2,6-diacetylpyridine bis(salicyloylhydrazone)

Cited by 53 publications

References 3 publications

Synthesis and Spectral Investigation of Some Transition Metal Complexes Containing Pentadentate Macroacyclic NNNNN-donor Schiff Base Ligands

Synthesis and Spectral Investigation of Some Transition Metal Complexes Containing Pentadentate Macroacyclic NNNNN-donor Schiff Base Ligands

Synthesis, spectroscopic characterization and crystal structure of mixed ligand Ni(II) complex of N-4-diethylaminosalicylidine-N′-4-nitrobenzoyl hydrazone and 4-picoline

Synthesis, Crystal Structure and Quantum Chemistry of a Novel Schiff Base N-(2,4-Dinitro-phenyl)-N'-(1-phenyl-ethylidene)-hydrazine

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