RAMAN AND INFRARED-SPECTRA OF SOLID 2,3-DIMETHYLBUTYNE

The infrared and Raman spectra of polycrystalline (CH3)(3)CCCH were re corded at 77 and 10 K, respectively. Crystal splittings were observed for some of the fundamentals and possible crystal structures are discu ssed. Anomalous band shifts between the liquid and solid state spectra were noted for butyne equivalent to CH modes, indicating that a stron g intermolecular interaction involving the butyne CH group occurs in t he crystalline state. The temperature dependence of the Raman spectra was measured for some prominent fundamental bands. No phase changes we re detected. In the solid-state Raman spectrum, bands attributable to both A(2) and E methyl torsions were observed. (C) 1998 John Wiley & S ons, Ltd.