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(A) Melting motif of NRCl. I – 115, II– 120, III – 125, IV – 130, and V –140°C. NR shows complete degradation at 130°C on heating. (B) 1H NMR spectra from 9.5 to 5.5 ppm of NRCl that was heated to respective temperature then quenched to −40°C. NRCl was completely intact under condition I but was completely degraded under condition IV with increasing levels of degradation seen in conditions II and III.
