ISSN:
0021-8383
Keywords:
Chemistry
;
Organic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Cobalt (II) forms a deep-brown colour with thiosalicyclic acid (hereafter abbreviated as TSA). Spectrophotometric studies show that cobalt and TSA are present in the ratio of 1:3 at a pH range, 3-11.5. The value of stability constant (log K) of the complex ion, as calculated spectrophotometrically, comes out to be 11.76 at pH 5.5 and 30°C. Potentiometric studies reveal the formation of two complex species, where cobalt and TSA are present in the ratio of 1:1 and 1:3 respectively. Magnetic susceptibility measurements on the complex ion (in solution) mixing and TSA in the ratio of 1:3 at pH, 6.5, gave a value of 2.3 B.M., indicating the presence of one unpaired electron. From the above data, a tentative structure of the complex ion has been proposed.
Additional Material:
5 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/prac.19660330308
