Chemistry - Coordination Chemistry Question with Solution | TestHub
Where two or more than two complexes having similar molecular weight (or) molecular formula but their structural arrangements are different these forms are known as isomer & this phenomenon is known as isomerism; isomerism are of two types structural & stereoisomerism ; stereoisomerism are of two types geometrical isomerism & optical isomerism; compound which has plane of symmetry will not exhibit optical isomerism.
Find total number of bidentate ligands (X) for which complex can show geometrical as well as optical isomerism
en (ethylenediamine), OX-2 (oxalate), dipy (dipyridine),
gly-1 (glycinate), pn (propylenediamine)
Answer:
Solution:
For a complex to show both geometrical and optical isomerism, the bidentate ligand (X) must be unsymmetrical.
Unsymmetrical bidentate ligands:
gly⁻¹ (glycinate)
pn (propylenediamine)
Symmetrical bidentate ligands:
en (ethylenediamine)
OX⁻² (oxalate)
dipy (dipyridine)
Only gly⁻¹ and pn are unsymmetrical. Thus, there are 2 such ligands.
