Copper (II) tetraammoniumate formula?

Most likely, this refers to copper II dihydroxotetraammoniaate. [(Cu (NH3) 4] (OH) 2

This is Schweitzer’s reagent.

Copper in this case is a complexing agent, and NH3 groups are ligands.

Together they make up the inner sphere. And together they have an oxidation state of the inner sphere of +2, that is, they are a complex cation (charge Cu = +2, and charge NH3 = 0).

The hydroxo group is the outer sphere. Has a charge of -1, but since there are two hydroxy groups, the total charge is -2. And it is the anion of this compound.



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