Subject: Organic Chemistry · Chapter: Organic Spectroscopy · Topic: Organic Spectroscopy – General · Exam: CSIR-NET DEC 2018 · Marks: 2 · Difficulty: Medium
In the ${ }^{31} \mathrm{P}\left\{{ }^{1} \mathrm{H}\right\} \mathrm{NMR}$ spectrum of a diamagnetic complex $m e r-\left[\mathrm{M}\left(\mathrm{PR}_{3}\right)_{3} \mathrm{Cl}_{3}\right]$ expected number of resonance is
(a)Three
(b)One
(c)Two
(d)Six
Answer
Answer (as printed): C
Explanation
I = 0 for M thus metal does not couple with phosphorous during NMR spectra. Since there are 2 types of P atoms present in the complex, 2 peaks are seen in 31P NMR spectrum.
Explanation as extracted from the printed page; notation may be imperfect.