Knowledge Bank

The case of synthesis of ""inclusion compounds"" of hydroquinone with small molecules, such as HCl, $H2S,SO2$ and $CO2$, affords an unique opportunity to study restricted rotational and translational motion of such molecules, as well as to elucidate the nature of the binding of the lattices of such compounds. Spectra, both absorption and differential, of such compounds, when suspended in KBr pellets, covering the range $0.8-15\mu$, are reported, which demonstrate the $proposed1$ difference in crystal structure between a-hydroquinone and its $\beta$ allomorph. In addition, some results are presented which indicate the extent of freedom of rotational motion of the small molecules included in the clathrate, and the extent of the binding of the small molecules to the clathrate lattice.