The orders of reactivity of ligands, NMe₃ PMe₃, and CO with complexes MeTiCl, and (CO)₅Mo (thf) are · ABC26IN0238
Subject: Inorganic Chemistry · Chapter: Organometallic Compounds · Topic: Organometallic Compounds – General · Exam: CSIR NET 2013 · Marks: 2 · Difficulty: Medium
The orders of reactivity of ligands, $\mathrm{NMe_3}$ $\mathrm{PMe_3}$, and $\mathrm{CO}$ with complexes $\mathrm{MeTiCl}$, and $\mathrm{(CO)_5Mo\,(thf)}$ are
(a)$\mathrm{CO}>\mathrm{PMe_3}>\mathrm{NMe_3}$ and $\mathrm{CO}>\mathrm{NMe_3}>\mathrm{PMe_3}$,
(b)$\mathrm{PMe_3}>\mathrm{CO}>\mathrm{NMe_3}$ and $\mathrm{NMe_3}>\mathrm{CO}>\mathrm{PMe_3}$
(c)$\mathrm{NMe_3}>\mathrm{PMe_3}>\mathrm{CO}$ and $\mathrm{CO}>\mathrm{PMe_3}>\mathrm{NMe_3}$
(d)$\mathrm{NMe_3}>\mathrm{CO}>\mathrm{PMe_3}$ and $\mathrm{PMe_3}>\mathrm{NMe_3}>\mathrm{CO}$
Answer
Answer: C ✓ checked by 4AB · confidence high
Explanation
Hard Ti(IV) in MeTiCl₃ prefers the hard N-donor: NMe₃ > PMe₃ > CO; soft Mo(0) prefers π-acceptors: CO > PMe₃ > NMe₃ (c).