Chapter 20, Problem 20.86SP

Interpretation Introduction

Interpretation:

The constitutional isomers of $\left[Ru{\left(N{H}_3\right)}_5\left(N{O}_2\right)\right]Cl$ should be drawn and labelled as linkage isomers and ionization isomers.

Concept Introduction:

Isomerism: Two chemical compounds are said to be isomers if they have same number and kind of atoms but different only in their orientation that is structural arrangements.

• Structural or Constitutional isomers: Have same molecular formula but different bonding arrangements of atoms. It is further classified as Linkage and Ionization isomers.
• Stereoisomers: Differ in their spatial arrangement of atoms.

Linkage isomers: The metal bond to ligand via either of two different donor atoms present in ligand. E.g. ${\left[Co{\left(N{H}_3\right)}_5\left(N{O}_2\right)\right]}^{2+}and{\left[Co{\left(N{H}_3\right)}_5\left(ONO\right)\right]}^{2+}$

Ionization isomers: Two compounds which have only difference in their anion bonded to the metal are said to be ionization isomers. E.g. $\left[Co{\left(N{H}_3\right)}_{5}Br\right]S{O}_{4}and\left[Co{\left(N{H}_3\right)}_{5}S{O}_4\right]Br$