Question

Write IUPAC name of the complex: [CoCl2(en)2]+.

Answer 1

Answer:

The IUPAC name of the given compound is Dichlorobis(ethylenediamine) cobalt (III) ion.

Answer 2

The IUPAC name of the complex is dichlorobis(ethane-1,2- diamine) cobalt(III).

• The given complex is $[CoCl_2(en)_2]^+$.
• Let the oxidation state of Co is x.
• The charge on Cl is -1.
• Hence we can write-
• $x - 1 \times 2 = + 1 \\ x = + 3$
• Hence the oxidation state of Co is +3.
• For two chlorine atoms dichlorido will come.
• For two en groups bis(ethane-1,2- diamine) will come.
• The IUPAC name of the complex is dichlorobis(ethane-1,2- diamine) cobalt(III).