Extension and improvement of the methanol-d NMR thermometer calibration.

NMR thermometers are a convenient way to determine the temperature inside the sample of an NMR spectrometer. They rely on signals with strongly temperature-dependent chemical shifts, often of OH groups; 99.8% perdeuterated methanol is an established example which is particularly well suited for modern, high-sensitivity spectrometers, but it is so far calibrated only in the range of 282 to 330 K.

An alternative perspective on von Winterfeldt et al.'s (1997) test of consequence monotonicity.

D. von Winterfeldt, N.-K.