Question Bank › Inorganic Chemistry › Organometallic Compounds › ABC26IN0227ABC26IN0227 · Organometallic Compounds Subject: Inorganic Chemistry · Chapter: Organometallic Compounds · Topic: Organometallic Compounds – General · Exam: CSIR-NET JUNE 2011 · Marks: 2 · Difficulty: Easy
Oxidation occurs very easily in case of
(a) $\left(\eta^{5}\text{-}\mathrm{C_5H_5}\right)_{2}\,\mathrm{Fe}$
(b) $\left(\eta^{5}\text{-}\mathrm{C_5H_5}\right)_{2},\;\mathrm{Co}$
(c) $\left(\eta^{5}\text{-}\mathrm{C_5H_5}\right)_{2},\;\mathrm{Ru}$
(d) $\left(\eta^{5}\text{-}\mathrm{C_5H_5}\right)_{2},\mathrm{Co}^{+}$
Answer Explanation Compound and number of electrons in the outer shell of the central atom: Compound Number of electrons $(\eta^{5}\text{-}\mathrm{C_5H_5})_2\mathrm{Fe}$ 18 $(\eta^{5}\text{-}\mathrm{C_5H_5})_2\mathrm{Co}$ 19 $(\eta^{5}\text{-}\mathrm{C_5H_5})_2\mathrm{Ru}$ 18 $(\eta^{5}\text{-}\mathrm{C_5H_5})_2\mathrm{Co}^{+}$ 18
Oxidation (loss of electrons) of $(\eta^{5}\text{-}\mathrm{C_5H_5})_2\mathrm{Co}$ to $(\eta^{5}\text{-}\mathrm{C_5H_5})_2\mathrm{Co}^{+}$ gives an 18-electron compound (more stable), therefore easy to oxidise. ← Previous in chapter · Chapter list · Next in chapter → Open in whiteboard · Browse this chapter in the app