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What is the reason behind [Fe(NH3)6]^2+ being an outer orbital sp3d2 hybridized complex instead of d2sp3, even though ammonia acts a strong field ligand in most of the cases?

What is the reason behind [Fe(NH3)6]^2+ being an outer orbital sp3d2 hybridized complex instead of d2sp3, even though ammonia acts a strong field ligand in most of the cases?

Grade:12

1 Answers

neelam
108 Points
6 years ago
It because in most of the cases the higher energy eg orbital are at more distance from the average energy level I. e., Bari Centre. Then value of debit is not more sufficient to cross this distance and as a result of it NH3 can not act as a strong ligand.

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