The nomenclature of the complex $[CuCl_2(CH_3NH_2)_2]$ is
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → Dicholrobis(methylamine)copper(II)
Let's determine the correct IUPAC name step by step for the complex:
Complex: $[CuCl_2(CH_3NH_2)_2]$
- Identify the ligands:
- CH3NH2 → methylamine (neutral ligand)
- Cl⁻ → chloro (anionic ligand)
- Count and use prefixes:
- 2 methylamine → bis(methylamine)
- 2 chloro → dichloro
- Order of naming ligands:
- Anionic ligands first, then neutral ligands → chloro before methylamine.
- Oxidation state of central metal (Cu):
- Chloride is -1 each, methylamine is neutral. Let oxidation state = x:
$x+2(−1)+2(0)=0 ⟹ x=+2$
- So, Copper(II)
5. Combine everything in proper IUPAC format:
- Ligands in alphabetical order (ignoring prefixes): chloro, methylamine
- Number of ligands indicated by di, bis
- Central metal + oxidation state → copper(II)