ABC26IN0229 · Organometallic Compounds
Subject: Inorganic Chemistry · Chapter: Organometallic Compounds · Topic: Organometallic Compounds – General · Exam: CSIR-NET 2011 · Marks: 2 · Difficulty: Medium
In the trans-$\mathrm{PtCl_2L(CO)}$ complex, the CO stretching frequency for $\mathrm{L=NH_3}$ , pyridine, $\mathrm{NMe_3}$ decreases in the order.
(a)pyridine $>\mathrm{NH}_{3}>\mathrm{NMe}_{3}$
(b)$\mathrm{NH_3}>$ pyridine $>\mathrm{NMe_3}$
(c)$\mathrm{NMe_3}>\mathrm{NH_3}>$ pyridine
(d)pyridine $>\mathrm{NMe}_{3}>\mathrm{NH}_{3}$
Answer
Explanation
Order of donor ability: $\mathrm{NMe_3} > \mathrm{NH_3} >$ pyridine. Order of CO stretching frequency: pyridine $> \mathrm{NH_3} > \mathrm{NMe_3}$.
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