The correct IUPAC name of [Co(en)2(NO2)Cl]Br, with the nitro group bound through nitrogen, is

chloridobis(ethane-1,2-diamine)nitrito-N-cobalt(III) bromide

chloridobis(ethane-1,2-diamine)nitrito-N-cobalt(II) bromide

chloridobis(ethane-1,2-diamine)nitrito-N-cobaltate(III) bromide

chloridobis(ethane-1,2-diamine)nitrito-N-cobalt(III) bromide

bis(ethane-1,2-diamine)chloridonitrito-N-cobalt(III) bromide

MolSynapse / Question bank / Coordination Compounds / Terminology, ligands and denticity, EAN

JEE Main levelSingle correct optionDifficulty 2 of 3cc014

The correct IUPAC name of $[Co (en) X_{2} (NO X_{2}) Cl] Br$ , with the nitro group bound through nitrogen, is

Achloridobis(ethane-1,2-diamine)nitrito-N-cobalt(II) bromide
Bchloridobis(ethane-1,2-diamine)nitrito-N-cobaltate(III) bromide
Cchloridobis(ethane-1,2-diamine)nitrito-N-cobalt(III) bromide
Dbis(ethane-1,2-diamine)chloridonitrito-N-cobalt(III) bromide

Answer: C

The complex ion has charge

+ 1

(balanced by

Br X^{-}

), so

x + 0 + (- 1) + (- 1) = + 1

and

x = + 3

. Ligands are cited alphabetically ignoring multiplying prefixes: chlorido, ethane-1,2-diamine, nitrito-N. The complex ion is the cation, so the metal is named cobalt(III) with no '-ate' ending.

Practice Coordination Compounds More on Terminology, ligands and denticity, EAN

Previous questionNext question

The correct IUPAC name of [Co(en)X2​(NOX2​)Cl]Br, with the nitro group bound through nitrogen, is

Answer: C

More questions on Terminology, ligands and denticity, EAN

The correct IUPAC name of $[Co (en) X_{2} (NO X_{2}) Cl] Br$ , with the nitro group bound through nitrogen, is