ABC26IN0244 · Organometallic Compounds
Subject: Inorganic Chemistry · Chapter: Organometallic Compounds · Topic: Organometallic Compounds – General · Exam: CSIR-NET 2014 · Marks: 2 · Difficulty: Easy
Amongst the following which is not isolobal pairs
(a)$\mathrm{Mn(CO)_5}$, $\mathrm{CH_3}$
(b)$\mathrm{Fe}(\mathrm{CO})_{4}, \mathrm{O}$
(c)$\mathrm{Co}(\mathrm{CO})_{3}, \mathrm{R}_{2} \mathrm{Si}$
(d)$\mathrm{Mn}(\mathrm{CO})_{5}$, RS
Answer
Explanation
$\mathrm{Co(CO)_3}$ 15 electron; $\mathrm{R_2Si}$ 6 electron (not isolobal) $\mathrm{Mn(CO)_5}$ 17 electron; $\mathrm{CH_3}$ 7 electron (not isolobal) $\mathrm{Fe(CO)_4}$ 16 electron; O 6 electron (isolobal) $\mathrm{Mn(CO)_5}$ 17 electron; RS 7 electron (isolobal)
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