Jahn-Teller effect is not observed in high spin complexes of

Jahn-Teller effect is not observed in high spin complexes of
  1. d7
  2. d8
  3. d4
  4. d9

Solution

Jahn Teller effect (JTE) explains the axial distortion in perfect octahedral geometry. It is present in d4 high spin, d7 low spin and d9 configuration, which have an odd number of electrons in a eg set. A weak Jahn Teller effect is also present in d7 high spin complex, which has an odd number of electrons in the set. Therefore, the Jahn Teller effect is not observed in high spin complexes of d8 orbital.

Asked in: NEET 2016 (Phase 2)

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