Explain the concept of hapticity with reference to allyl complexes, su

Question

Explain the concept of hapticity with reference to allyl complexes, such as $[Pd(\eta^3-C_3H_5)Cl]$ . How does $\eta^3$ -coordination differ from $\eta^1$ -coordination in terms of bonding and structure?

10 Jan 2026

Answer :

Word Count : 273

Hapticity refers to the number of contiguous atoms in a ligand that are directly bonded to a metal center in a coordination complex. It is denoted by the Greek letter η (eta), followed by a superscript indicating the number of atoms involved. In allyl complexes, the allyl ligand (CH₂=CH–CH₂) can bind to a metal ________ ________ _____ ____ ____ ________ _________ _______ _______.
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