Question

Write down the IUPAC name of
[CO(NH3)5(NO2)](NO3)2​

Answer 1

Answer:

pentaamminenitrocobalt(|||) nitrate

Answer 2

IUPAC name of [CO(NH3)5(NO2)](NO3)2 is Pentaamminenitrocobalt(III) nitrate.

Explanation:

• While writing the IUPAC nomenclature of a coordination compound, the ligands present are written in alphabetical order.
• The coordination compound contains ammine and nitro groups as ligands, so ammine will be written first and then nitro will be written.
• There are 5 ammine groups so, it will be named as pentammine.
• The metal present is cobalt and its oxidation state is +3, so it will be written as Cobalt (III).
• At last, the nitrate group present will be written.
• Hence, the IUPAC name will be Pentaamminenitrocobalt (III) nitrate.