Coordination Compounds - Result Question 78
####85. Among the following, which is not the $\pi$-bonded organometallic compound?
[2003]
(a) $(CH_3)_4 Sn$
(b) $K[PtCl_3(\eta^{2}-C_2 H_4)]$
(c) $Fe(\eta^{5}-C_5 H_5)_2$
(d) $Cr(\eta^{6}-C_6 H_6)_2$
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Solution:
- (a) The number of carbon atom found in $\pi$ bonded organometallic compounds is indicated by the greek latter ’ $\eta$ ’ with a number. The prefixes $\eta^{2}, \eta^{5}$ and $\eta^{6}$ indicate that 2, 5 and 6 carbon atom are bound to the metal in the compound. $(CH_3)_4 Sn$ does not involve any pi $(\pi)$ bond formation. $(CH_3)_4 Sn$ is a $\sigma$ bonded organometallic compound.
