[Ni(NH2CH2CH2NH2)3]Br2 命名求解?

Tris(ethylenediamine)nickel(II) bromide

While prefix for more than 1 ligand is usually di-, tri-, tetra- etc., the prefix for polydentate is bis-, tris-, tetrakis- etc.

Ligand is ethylenediamine (ethane-1.2-diamine).

The complex ion is cationic, so the central metal atom retains its name (nickel) rather than nickelate.

State the oxidation number of central atom immediately behind.

State the counter-anion.


Also, note that this compound is optically active. There're two ways to arrange the bidentate ligand around the central atom, each of them is the non-superimposable image of another. As an analogy, think of a electric fan.