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Author: Subject: Bis(diethylammonium) tetrachlorocuprate
CZip
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[*] posted on 4-6-2011 at 13:10
Bis(diethylammonium) tetrachlorocuprate


Do you have any experiencis with this compound? It should be thermochromic (color change from green to yellow at abaut 52 degrees).
A try to make it (copper chloride, diethylamine, hydrochloric acid - stechio and slight exces of HCl). But its soluable as hell and it won't crystalize even if it's putted intoo a freezer and cooled to about -11 degrees (it won't freeze).

Another topic for discussion, do you know (and practicly try) some less usuall thermochromic compounds? (please do not write Ag2(HgI4) and so - i think they are well known).

Thanx for answers. Sorry for my not one of the best english grammar skill.
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[*] posted on 4-6-2011 at 13:24


Try to add some solvent to your solution of the copper salt, such as acetone. This should precitipate it.
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[*] posted on 7-6-2011 at 12:56


I added acetone - nothing has precipitated. Also tryed ethanol and so... Same as acetone.

I thing i tryed to boil it down under vacuum to minimum volume and then put in freezer.
Or do you have any other idea or do you know some other thermocromes..?
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