Chapter 20, Problem 20.68SP

Interpretation Introduction

Interpretation:

The compound ${\left[\text{Ni}{\left(\text{en}\right)}_{\text{3}}\right]}^{\text{2+}}$ formed from ${\text{Ni}}^{\text{2+}}$ and ethylenediamine is a Lewis acid–base reaction should be explained.

Concept Introduction:

Reduction: If electrons are gained to a species during a chemical reaction. The species which gets electrons are said to be reduced.

Oxidation: If electrons are moved from a species during a chemical reaction. The species whose electrons are removed is said to be oxidized.

Lewis acid: The chemical species which accepts pair of electrons are termed as Lewis acid.

Lewis base: The chemical species which donates pair of electrons are termed as Lewis base.

Coordination compounds: The compounds having coordination covalent bonds which form when metal ions react with polar molecules or anions.

Ligands: The ions or molecules that forms coordination covalent bond with metal ions in a coordination compound.

Ligands should have minimum one lone pair of electron, where it donates two electrons to the metal. Metal atom accepts the electron pair from a ligand forming a coordination bond.

Bidentate ligand is ligands which donate two pair of electrons to form bond with metal.