✍ Scribed by A. Schanck; M. Van Meerssche; J.M. Dereppe
No coin nor oath required. For personal study only.
Broad-line nuclear magnetic resonance of boron trifluoride-monomethylamine complex reveals the presence of molecular motion in the solid state. The observed values of second moments of fluorine and proton signals are compared with the theoretical values calculated from the known X-ray structure assuming motion of the different parts of the compound.
Activation energy for the reorientation energy of the boron trifluoride group is derived from the temperature dependence of the fluorine linewidth. Differential thermal analysis results are compared with nuclear magnetic resonance observations.
📜 SIMILAR VOLUMES
## Nuclear magnetic resonance wide line and spin lattice relaxation time measurements on crystalline pyrene reveal a transition over the temperature range 255-285%. attributed to the reorientation of pyrene molecules about the axis perpendicular to the molecular plane. Activation energy for the mo