Coordination CompoundHard

Question

In Ziesses salt C = C bond length is :
        Note : 

Options

A.1.37 (Ao)
B.1.19 (Ao)
C.1.87 (Ao)
D.1.34 (Ao)

Solution

Relative to free ethylene the C − C bond is lengthened (from 133.77 pm to 137.5 pm). The bonding scheme is analogous to that in carbon monoxide complexes in which there is a ligand metal s donation and a reciprocal metal to ligand p bonding.
   

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