how we get those roman numbers in naming coordination compounds like, the iupac name of [Ni(NH3)4][NiCl4] is Tetraamminenickel(II)-tetrachloronickelate(II)? Please explain with many examples...

Asked by Ishaan | 26th Oct, 2012, 06:48: AM

Expert Answer:

Roman in the naming represent the oxidation state of the central metal atom.

In the given compound the ligand  NH3 is neutral so has o oxidation state and ligand Cl has -4

So , oxidation number of Ni = 4/2 = +2  (II)

Answered by  | 27th Oct, 2012, 10:56: PM

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