Question

Ferrocene is

• A. $Fe{\left({\eta }^5-C_5{H}_5\right)}_2$
• B. $Fe{\left({\eta }^2-C_5{H}_5\right)}_2$
• C. $\mathrm{Cr}{\left({\eta }^5-C_5{H}_5\right)}_5$
• D. $Os{\left({\eta }^5-C_5{H}_5\right)}_2$

Answer 1

Answer: (A)

Ferroceneis an organometallic compound with the formula $Fe{\left({\eta }^5-C_5{H}_5\right)}_2.$ The molecule consists of two cyclopentadienyl rings bound on opposite sides of a central iron atom.