Preparation of mercury tetraisothiocyanatocobaltate(ii). Determination of its magnetic moment
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Answer:
Synthesis and structure:
It is prepared by treating solutions containing mercury(II) and thiocyanate ions. The low solubility product of mercury thiocyanate causes it to precipitate from solution. Most syntheses are achieved by precipitation: Hg(NO3)2 + 2 KSCN → Hg(SCN)2 + 2KNO.
( ii )
A common laboratory procedure for the determination of the magnetic moment for a complex is the Gouy method which involves weighing a sample of the complex in the presence and absence of a magnetic field and observing the difference in weight
In every case the reaction mixture was stirred at low temperature for 4 hours. During this time, the complexes were formed. ... Magnetic susceptibility measurements of the complexes in the solid state were determined by a Gouy balance at room temperature using mercury(II) tetrathiocyanatocobaltate as the calibrant.