Sciencemadness Discussion Board

colour of hexachlorostannate(IV) solutions

kyro8008 - 5-5-2006 at 12:44

I have researched this and it remains very elusive - that is; what is the colour of [SnCl6]2- in solution?

All I have found are some references to the ammonium salt, which apparently is pink, although this didnt seem very conclusive.

The answer im hoping for is yellow...

If anyone could provide any links or information about the chemistry of tin, I would be very grateful. The books I have do not go into depth with tin and I can find little on the internet apart from the common reactions.

Thankyou :)

woelen - 6-5-2006 at 09:45

In my book, complexes of SnCl4 are mentioned, the parent compound SnCl4 being mentioned as colourless, the color of the complex unfortunately is not mentioned.

The solid ammonium hexachlorostannate (IV) is white, when in the pure state. This also gives strong evidence for the complex being colorless.

http://www.gfschemicals.com/Search/MSDS/A0324MSDS.PDF

So, I'm inclined to say it is colorless, and not yellow.

kyro8008 - 9-5-2006 at 08:31

Thanks woelen, I agree with you after some more research.

Apparently the ammonium salt of hexachlorostannate(IV) is called "pink salt" for some random reason despite being white... and yes I think it is colourless in solution.

Thanks :)

[Edited on 9-5-2006 by kyro8008]

[Edited on 9-5-2006 by kyro8008]