Q8 · CSIR NET Chemistry, June 2011
Paper: CSIR NET June 2011 · Subject: Inorganic Chemistry · Chapter: Organometallic Compounds · Topic: Metal Carbonyls · Marks: 2 · Difficulty: Easy
Complex in which organic ligand is having only $\sigma$-bond with metal is:
(a)$\mathrm{W}\left(\mathrm{CH}_{3}\right)_{6}$
(b)$\left(\eta^{5}\text{-}\mathrm{C_5H_5}\right)_{2}\,\mathrm{Fe}$
(c)$\mathrm{K[PtCl_3(C_2H_2)]}$
(d)$\left(\eta^{6}\text{-}\mathrm{C_6H_6}\right)_{2}\,\mathrm{Ru}$
Answer
Answer: A ✓ checked by 4AB · confidence high
Explanation
W(CH₃)₆ has six methyl groups each bound by one σ bond. Ferrocene, Zeise's salt and (η⁶-C₆H₆)₂Ru all involve π-bonded ligands.
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