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Author: Subject: Nickel powder from Nickel Sulphate?
LHcheM
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[*] posted on 3-12-2011 at 21:54
Nickel powder from Nickel Sulphate?

I just accidentally poured some KBH4/NaOH solution into a solution of Nickle (II) sulphate, then the green precipitate appeared as expected, but then after a few seconds, the precipitate turned black, with Hydrogen bubbling out from solution.

So is the grey-black powder Nickel metal?
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[*] posted on 4-12-2011 at 03:30


Could be nickel boride which gets a mention here

http://en.wikipedia.org/wiki/Nickel(II)_chloride
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KrysHalide
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[*] posted on 4-12-2011 at 04:31


Definitevly Ni Boride!! That's a method of choice for it's preparation. It decomposes the remaining BH4- into H2...



Never regret thy fall,
O Icarus of the fearless flight
For the greatest tragedy of them all
Is never to feel the burning light.

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LHcheM
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[*] posted on 4-12-2011 at 05:18


Oh I never thought of that! Nickel Boride! Thanks!!!

A useful reagent for Organic reactions :)
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