4AB › Chemistry PYQ › CSIR-NET › June 2017 › Q44Q44 · CSIR-NET Chemistry, June 2017 Paper: CSIR-NET June 2017 · Subject: Inorganic Chemistry · Chapter: Organometallic Compounds · Topic: Oxidative Addition Reductive Elimination · Marks: 2 · Difficulty: Easy
Addition of $\mathrm{NaBH}_{4}$ to $\left[\left(\eta^{5}-\mathrm{C}_{\mathrm{p}}\right) \mathrm{Fe}\left(\eta^{6}-\mathrm{C}_{6} \mathrm{H}_{6}\right)\right]^{+}$will give
(a) $\left[\left(\eta^{5}-\mathrm{Cp}\right) \mathrm{Fe}(\mathrm{H})_{2}\right]$
(b) $\left[\left(\eta^{5}-\mathrm{Cp}\right) \mathrm{Fe}(\mathrm{H})\left(\eta^{6}-\mathrm{C}_{6} \mathrm{H}_{6}\right)\right]$
(c) $\left[\left(\eta^{5}-\mathrm{Cp}\right) \mathrm{Fe}\left(\eta^{6}-\mathrm{C}_{6} \mathrm{H}_{6}\right)\right]$
(d) $\left[\left(\eta^{5}-\mathrm{Cp}\right) \mathrm{Fe}\left(\eta^{6}-\mathrm{C}_{6} \mathrm{H}_{7}\right)\right]$
Answer Answer: D ✓ checked by 4AB · confidence high
Explanation Hydride adds to the arene to give [CpFe(η⁵-C₆H₇)] (d).
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