Which of the following organometallic compoun | vedclass

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(B) Organometallic compounds that are both $\sigma$ and $\pi$ bonded typically involve ligands like $CO$,$C_2H_4$ (ethene),or $C_5H_5^-$ (cyclopentadi

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$[PtCl_3(\eta^2-C_2H_4)]^-$

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(B) Organometallic compounds that are both $\sigma$ and $\pi$ bonded typically involve ligands like $CO$,$C_2H_4$ (ethene),or $C_5H_5^-$ (cyclopentadienyl) where the metal-ligand bond involves both $\sigma$-donation and $\pi$-backbonding.In $[PtCl_3(\eta^2-C_2H_4)]^-$,known as Zeise's salt,the ethene ligand acts as a $\pi$-donor to the $Pt$ atom and receives electron density from the $Pt$ $d$-orbitals into its $\pi^*$ antibonding orbital ($\pi$-backbonding).While ferrocene $[Fe(\eta^5-C_5H_5)_2]$ also involves $\pi$-bonding,Zeise's salt is the classic example of a $\sigma$-$\pi$ bonded organometallic complex in coordination chemistry textbooks.

Which of the following organometallic compounds is both $\sigma$ and $\pi$ bonded?

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