Thermal decomposition of ferrous oxalate dihydrate studied by direct current electrical conductivity measurements

1981 ◽  
Vol 16 (9) ◽  
pp. 2387-2397 ◽  
Author(s):  
K. S. Rane ◽  
A. K. Nikumbh ◽  
A. J. Mukhedkar
Keyword(s):  
Electrical Conductivity ◽  
Thermal Decomposition ◽  
Direct Current ◽  
Conductivity Measurements ◽  
Ferrous Oxalate ◽  
Oxalate Dihydrate

Complexing Ability of Some 2-Spirothiazolid-4-one Derivatives

1994 ◽  
Vol 49 (4) ◽  
pp. 551-555
Author(s):  
Mohamed A. El-Gahami ◽  
Maher F. El-Zohry
Keyword(s):  
Electrical Conductivity ◽  
Thermal Decomposition ◽  
Metal Ions ◽  
Chelating Ligands ◽  
Bidentate Ligands ◽  
Conductivity Measurements ◽  
X Ray Diffraction ◽  
X Ray ◽  
H Nmr ◽  
Conducting Materials

The complexes of some 2-spirothiazolid-4-one derivatives have been prepared with Cu(II), N i(II), C o(II) and Cd(II) salts. The complexes all have a metal to ligand ratios of 1:1 or 1:2 and are all believed to have tetrahedral structures with chelating ligands. Their structures are suggested on the basis of analysis, X-ray diffraction techniques, spectral (UV-VIS, IR, 1H NMR), and thermal decomposition as well as conductivity measurements. The ligands are coordinated to the metal ions as monovalent bidentate ligands through the OCO groups. Electrical conductivity studies indicated that these complexes have activation energies in the range of semi-conducting materials. It is observed that some of the complexes are m ore potent as bacteriostatic agents than the free ligands.

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