If [ RhCl 3 ( Py ) 3 ] has x pairs of enantiomers, [ Cu ( gly ) 2 ( OH 2 ) 2 ] has y pairs of enantiomers & [ PtCl 2 ( NH 3 ) 2 ( Py ) 2 ] 2 + has z pairs of enantiomers, the value o

Question

If [ RhCl 3 ​ ( Py ) 3 ​ ] has x pairs of enantiomers, [ Cu ( gly ) 2 ​ ( OH 2 ​ ) 2 ​ ] has y pairs of enantiomers & [ PtCl 2 ​ ( NH 3 ​ ) 2 ​ ( Py ) 2 ​ ] 2 + has z pairs of enantiomers, the value of x + y + z is

TestHub · Accepted Answer

[RhCl₃(Py)₃]

Geometry: Octahedral

Ligands: 3 Cl⁻ + 3 pyridine (Py)

Octahedral with 3 identical ligands of each type → has a plane of symmetry → achiral→ x = 0 pairs of enantiomers

[Cu(gly)₂(OH₂)₂]

Geometry: Octahedral

Ligands: 2 bidentate glycinate (gly) + 2 water

Two bidentate ligands can form Δ and Λ optical isomers→ y = 3 pairs of enantiomers

[PtCl₂(NH₃)₂(Py)₂]²⁺

Geometry: Octahedral

Ligands: 2 Cl⁻, 2 NH₃, 2 Py

Only cis-isomer is chiral → 1 pair of enantiomers→ z = 1

Chemistry - Coordination Chemistry Question with Solution | TestHub

x + y + z = 0 + 3 + 1 = 4

Doubts & Discussion

JEE Advanced 2027 (Class 12+)