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Preparation of cobalt(ll)thiocyanate

Sir, I want to know the method of preparing of Co(ll) thiocyanate.please help me.

Neetu
student - Delhi, India
2006

2006

Interesting compound!

I made it once by dissolving cobalt carbonate in perchloric acid, then adding potassium thiocyanate ⇦this on eBay or Amazon [affil links] . Insoluble potassium perchlorate drops out. Then I got my target compound by filtering, concentrating the filtrate, and letting it crystallize. Then I washed the crystals with some solvent (I forget which one) and air dried them.

Dave Wichern
Consultant - The Bronx, New York

Neetu
Be VERY careful if you work with perchloric acid. It is an exceptionally strong oxidising agent. Drying crystals in the presence of acid can lead to the filter paper igniting! Perchloric acid fumes condensing in fume cupboard ducts have led to major explosions.
Take advice from your teacher before trying this

Geoff Smith
Hampshire, England
2007

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