Syntheses and Physico-Chemical Studies of Potassium Hydrotris and Tetrakis (Phthalimidyl) borates and Their Complexes with First Row Transition Metal Ions

1986 ◽  
Vol 16 (8) ◽  
pp. 1067-1087 ◽  
Author(s):  
Saiyid Aftab A. Zaidi ◽  
Maimoona Jaria ◽  
Zafar A. Siddiqi
Keyword(s):  
Transition Metal ◽  
Metal Ions ◽  
Transition Metal Ions ◽  
Physico Chemical ◽  
Chemical Studies

Physico-chemical study of the complex formation between 2-(tosylamino)benzaldehyde bishydrazones and transition metal ions

2015 ◽  
Vol 85 (8) ◽  
pp. 1902-1909 ◽  
Author(s):  
L. D. Popov ◽  
Yu. P. Tupolova ◽  
S. I. Levchenkov ◽  
A. A. Tsaturyan ◽  
V. V. Lukov ◽  
...  
Keyword(s):  
Complex Formation ◽  
Transition Metal ◽  
Metal Ions ◽  
Chemical Study ◽  
Transition Metal Ions ◽  
Physico Chemical

scholarly journals Planar complexation chromatography of transition metal ions

2018 ◽  
Vol 17 (4) ◽  
pp. 682-688
Author(s):  
И. И. Малахова ◽  
В. Д. Красиков ◽  
Н. И. Горшков ◽  
А. Н. Беляев ◽  
С. М. Староверов
Keyword(s):  
Transition Metal ◽  
Metal Ions ◽  
High Performance ◽  
Ph Value ◽  
Iminodiacetic Acid ◽  
Retention Factor ◽  
Transition Metal Ions ◽  
Chemical Parameters ◽  
Physico Chemical ◽  
Layer Chromatography

The method for analysis of transition metal ions (Zn(II), Cu(II), Со(II), Ni(II), Fe(III)) by high-performance planar (thin layer) chromatography with the use of sorbents modified by chelating fragments of iminodiacetic acid was developed. The correlation between retention factor (Rf) and physico-chemical parameters of the separated systems was studied. It was demonstrated that unlike the pH value, ionic strength of a solution does not exert significant influence on resolution and mobility of transition metal cations

HREM Study of electron-induced surface radiation damage in ReO3

1991 ◽  
Vol 49 ◽  
pp. 636-637
Author(s):  
R. Ai ◽  
H.-J. Fan ◽  
L. D. Marks
Keyword(s):  
Transition Metal ◽  
Metal Ions ◽  
Metal Oxides ◽  
Electron Irradiation ◽  
Transition Metal Oxides ◽  
Carbon Film ◽  
Transition Metal Ions ◽  
Surface Radiation ◽  
Valence Transition ◽  
Electron Microscopes

It has been known for a long time that electron irradiation induces damage in maximal valence transition metal oxides such as TiO2, V2O5, and WO3, of which transition metal ions have an empty d-shell. This type of damage is excited by electronic transition and can be explained by the Knoteck-Feibelman mechanism (K-F mechanism). Although the K-F mechanism predicts that no damage should occur in transition metal oxides of which the transition metal ions have a partially filled d-shell, namely submaximal valence transition metal oxides, our recent study on ReO3 shows that submaximal valence transition metal oxides undergo damage during electron irradiation.ReO3 has a nearly cubic structure and contains a single unit in its cell: a = 3.73 Å, and α = 89°34'. TEM specimens were prepared by depositing dry powders onto a holey carbon film supported on a copper grid. Specimens were examined in Hitachi H-9000 and UHV H-9000 electron microscopes both operated at 300 keV accelerating voltage. The electron beam flux was maintained at about 10 A/cm2 during the observation.

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