The sharpening of the room-temperature spectrum due to CF![[double bond, length half m-dash]](http://hg.y866.cn/compound/lib/scimg/usr/1/C29690001132.jpg)
N– in CF3N:CF·CF2Cl as the temperature is lowered may be due to natural decoupling of 14N–19F coupling resulting from more effective quadrupolar relaxation of the nitrogen nucleus at the lower temperatures.
