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Pressure-induced molecular orientational ordering in single crystals of C60 has been studied by Raman spectroscopy. The strongest intramolecular mode attributed to the double-bond stretching “pentagonal pinch” vibration shows considerable softening across the transition around 3.5 kbar. The linewidths also increase considerably at higher pressures, indicating an orientational glassy state.
The molecular structure of trichloroacetonitrile has been studied by electron diffraction by the visual interpretation of sectored photographs. These parameters were obtained: C-N = 1.165 ± 0.025, C-C = 1.465 ± 0.025, C-Cl = 1.765 ± 0.01 A., and < CCCl = 109.5 ± 1°.
