Physico-chemical Studies of Some Transition Metal(II) Chlorides in Methanol-Water Mixture at Different Temperatures

2016 ◽  
Vol 4 (1) ◽  
pp. 48-55
Author(s):  
Lalzawnpuia Lalzawnpuia ◽  
◽  
N. Mohondas Singh ◽  
Keyword(s):  
Transition Metal ◽  
Water Mixture ◽  
Physico Chemical ◽  
Different Temperatures ◽  
Chemical Studies

scholarly journals Physico-chemical studies of some aminobenzoic acid hydrazide complexes

2004 ◽  
Vol 69 (4) ◽  
pp. 255-264 ◽  
Author(s):  
Abd El ◽  
Abd El ◽  
Gamel El ◽  
Abd El
Keyword(s):  
Acid Hydrazide ◽  
Conductometric Titration ◽  
Aminobenzoic Acid ◽  
X Ray ◽  
Physico Chemical ◽  
Coordination Process ◽  
Different Temperatures ◽  
Chemical Studies ◽  
The Stability ◽  
Thermal Stability Of

The stability constants and related thermodynamic functions characterizing the formation of divalent Ni, Cu, Zn, Cd and Hg complexes with o- and p-aminobenzoic acid hydrazide were determined potentiometrically at different temperatures. The formations of the complexes are endothermic processes. The formed bonds are mainly electrostatic. Conductometric titration was carried out to determine the stoichiometry and stability of the formed complexes. The structures of complexes were characterized by their IR, 1H-NMR and 13C-NMR spectra, as well as X-ray diffractograms. The coordination process takes place through the carbonyl group and the terminal hydrazinic amino group. The thermal stability of the complexes was followed in the temperature range 20?600 ?C.

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