Thermal degradation studies on some lanthanide—edta complexes containing hydrazinium cation

Vikram, L.; Raju, B. Bangar; Ragul, R.; Sivasankar, B.

doi:10.1007/s10973-007-8685-4

Cited by 9 publications

(3 citation statements)

References 8 publications

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“…The nickel to carboxylate oxygen bond length are Ni-O 22 = 2.0194(16), Ni-O 13 = 2.0443 (15) and Ni-O 24 = 2.0773 (16) respectively and the nickel to nitrogen distance between Ni-N 1 = 2.1608 (17) and NI-N 2 = 2.0707(18) of Hedta nitrogen while the Ni-N 3 distance between nickel and nitrogen of hydrazinium is 2.087(2) Å . All the metal to oxygen bonds are in the same range indicating that almost equal interaction between the metal and these oxygen atoms.…”

Section: Crystal Structure Of [N 2 H 5 Ni(hedta)](h 2 O)mentioning

confidence: 99%

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Molecular Structure, Thermal Reactivity, Spectral Properties and Biological Activities of Hydrazinium Metal(II) and Metal(III) Ethylenediaminetetraacetate Hydrates

Ragul¹,

Sivasankar²

2012

J Chem Crystallogr

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Hydrazinium metal(II) ethylenediaminetetraacetate dihydrates, [N 2 H 5 M(Hedta)](H 2 O) 2 where M = Fe(II), Co(II) or Ni(II) and hydrazinium metal(III) ethylenediaminetetraacetate monohydrates, N 2 H 5 [M(edta)(H 2 O)]where M = Cr(III), Fe(III) or Co(III) have been prepared and characterized by chemical analyses, magnetic moment, electronic and infrared spectra and X-ray powder diffraction studies. The X-ray single crystal structures of Ni(II) and Fe(III) complexes were determined. The nickel complex is octahedral with pentadentate Hedta 3-ion and the sixth site is occupied by hydrazinium cation. However, Fe(III) complex is found to be seven coordinated with a hexadentate edta 4-anion and a water molecule which occupying the seventh site of the coordination sphere. Both the sets of complexes show enhanced antioxidant activity than their non-hydrazinium counterparts. However, the metal(III) complexes show better antioxidant activity than the corresponding metal(II) complexes. The metal(II) and metal(III) complexes have been also subjected to antiviral screening. These results show that these complexes are active against HSV-1 and HSV-2 viruses.

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Section: Crystal Structure Of [N 2 H 5 Ni(hedta)](h 2 O)mentioning

confidence: 99%

“…Though simple metal amino carboxylates are known, the corresponding hydrazinium, N 2 H 5 ? complexes are scarce in the literature [14][15][16]. Hydrazinium cation, due to the presence of a lone pair in one of the nitrogen atom has the ability to coordinate with metal ions.…”

Section: Introductionmentioning

confidence: 99%

Molecular Structure, Thermal Reactivity, Spectral Properties and Biological Activities of Hydrazinium Metal(II) and Metal(III) Ethylenediaminetetraacetate Hydrates

Ragul¹,

Sivasankar²

2012

J Chem Crystallogr

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“…[24] as chelating agents were used for the preparation of the coating solutions. EDTA is known to form very stable complexes with a wide range of different cations, Cu(II), Ni(II), Fe(III), Cr(III), Co(II), Mn(II), Ba(II), and Ir(IV) [25,26]. Alternatively, PEI is also a promising polymer for its excellent wetting behavior of substrate surfaces.…”

Section: Introductionmentioning

confidence: 99%

Development of a Fluorine-Free Polymer-Assisted-Deposition Route for YBa2Cu3O7−x Superconducting Films

et al. 2020

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Polymer assisted deposition (PAD) was used as an environmentally friendly, non-fluorine, growth method for superconducting YBa2Cu3O7−x (YBCO) films. The kinetics of the thermal decomposition of the precursor powder was studied by thermogravimetry coupled with mass spectrometry (TG-QMS). YBCO films were spin coated on (100) SrTiO3 (STO) single crystalline substrates, followed by a single step thermal treatment under wet and dry O2 and O2/N2 mixture. The as-obtained films were epitaxially grown having a [001]YBCO||[001]STO out-of-plane epitaxial relationship and exhibited good superconducting properties with Tc (R = 0) > 88 K, transition widths, ΔT ≈ 2 K and critical current densities as high as 2.3 MA/cm2 at 77 K and self magnetic field.

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Preparation, Crystal Structures and Thermal Decomposition of Ba₂(EDTA) and Ba₂(EDTA)·2.5H₂O

Chen

Hoffmann

Prots

et al. 2010

Zeitschrift anorg allge chemie

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The barium ethylenediaminetetraacetato (EDTA) complexes, Ba2(EDTA) and Ba2(EDTA)·2.5H2O, were hydrothermally synthesized and characterized by single‐crystal X‐ray structure determination. Ba2(EDTA) (monoclinic, P21/c, (No.14), a = 9.7651(10) Å, b = 8.0870(6) Å, c = 10.3313(11) Å, β = 118.024(4)°, V = 720.20(12) Å3, Z = 2) exhibits a layered arrangement of coordination polyhedra around barium whereas in the crystal structure of Ba2(EDTA)·2.5H2O (tetragonal, P4nc, (No.104), a = 19.7126(7) Å, c = 8.9813(4) Å, V = 3490.0(2) Å3, Z = 8) a completely different three dimensional framework containing wide channels is formed. Thermoanalytical investigations reveal a reversible dehydration behavior for Ba2(EDTA)·2.5H2O. The anhydrous form was characterized by PXRD (tP, a = b = 19.226(10) Å, c = 8.986(3) Å, V = 3335.4(3) Å3) and is assumed to be closely related to the crystal structure of the hydrated starting material. The final decomposition product of both compounds after heating in air up to 1000 °C was found to consist of pure BaCO3.

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Thermal degradation studies on some lanthanide—edta complexes containing hydrazinium cation

Cited by 9 publications

References 8 publications

Molecular Structure, Thermal Reactivity, Spectral Properties and Biological Activities of Hydrazinium Metal(II) and Metal(III) Ethylenediaminetetraacetate Hydrates

Molecular Structure, Thermal Reactivity, Spectral Properties and Biological Activities of Hydrazinium Metal(II) and Metal(III) Ethylenediaminetetraacetate Hydrates

Development of a Fluorine-Free Polymer-Assisted-Deposition Route for YBa2Cu3O7−x Superconducting Films

Preparation, Crystal Structures and Thermal Decomposition of Ba₂(EDTA) and Ba₂(EDTA)·2.5H₂O

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Thermal degradation studies on some lanthanide—edta complexes containing hydrazinium cation

Cited by 9 publications

References 8 publications

Molecular Structure, Thermal Reactivity, Spectral Properties and Biological Activities of Hydrazinium Metal(II) and Metal(III) Ethylenediaminetetraacetate Hydrates

Molecular Structure, Thermal Reactivity, Spectral Properties and Biological Activities of Hydrazinium Metal(II) and Metal(III) Ethylenediaminetetraacetate Hydrates

Development of a Fluorine-Free Polymer-Assisted-Deposition Route for YBa2Cu3O7−x Superconducting Films

Preparation, Crystal Structures and Thermal Decomposition of Ba2(EDTA) and Ba2(EDTA)·2.5H2O

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Preparation, Crystal Structures and Thermal Decomposition of Ba₂(EDTA) and Ba₂(EDTA)·2.5H₂O