Figure 7
From: The effect of temperature and pressure on the crystal structure of piperidine
Thermal expansion of piperidine. (a) Principal values of the thermal expansion tensor: (b) The volume thermal expansion. In each case the small circles are calculated from pairs of experimental data points, whereas the trend-line is calculated from pairs of points with values taken from the Einstein fits in Figure 5. At very low temperature, the points are calculated from very small differences, and the results less reliable than at higher temperature.