Q5 · CSIR NET Chemistry, December 2018
Paper: CSIR NET December 2018 · Subject: Organic Chemistry · Chapter: Organic Spectroscopy · Topic: Organic Spectroscopy – General · Marks: 2 · Difficulty: Medium
In the $^{31}\mathrm{P}\{^{1}\mathrm{H}\}$ NMR spectrum of a diamagnetic complex $mer$–$[\mathrm{M}(\mathrm{PR}_3)_3\mathrm{Cl}_3]$ 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.
Study loop for Organic Spectroscopy