Nickel Two

Nickel two is greenish blue

Add some chloride, do, do, do

It turns to yellow 'cause it's d-eight

(and it's a tetrahedron).

There's lots of green, then the amine

That deep blue color that you've seen

An octahedral complex now.

If you add DMG to base precipitate

And you look fast

A yellow color you may see

Square planar nickel doesn't last.

We're almost through with nickel two

Add some sulfide - oh, P.U.!

Our nickel one pot's done with now.

Nickel two is greenish blue		NiSO4
Add some chloride, do, do, do It turns to yellow 'cause it's d-eight (and it's a tetrahedron).		NiCl42-
There's lots of green, then the amine		Ni2+ forms on dilution
		Ni2+ + CO32- --> NiCO3
		NiCO3 + HNO3 --> Ni2+ + 2NO3-
		Ni2+ + 2OH- --> Ni(OH)2
That deep blue color that you've seen An octahedral complex now.		Ni(OH)2 + 6NH3 --> Ni(NH3)62+ + 2OH-
If you add DMG to base precipitate		Ni(NH3)62+ + 2dmgH --> Ni(dmg)2 + 4NH3 + 2NH4+
And you look fast
A yellow color you may see
Square planar nickel doesn't last.
We're almost through with nickel two
Add some sulfide - oh, P.U.!		Ni(dmg)2 + S2- --> NiS + 2dmg-
Our nickel one pot's done with now.