PH3 and Isotopomers in Condensed Phases

The IR absorption spectra of PH3 and isotopomers in solid Ar matrices were recorded at 12 K [1, 2] (see Table 16). 

Not resolved from PH3 or PD3. - ) Two bands observed for removed degeneracy in the mixed isotopic molecules. 

IR and Raman spectra of PH3 and PD3 films (see Table 17, p. 194) were recorded, and their splitting pattern was analyzed in terms of the phosphane modifications being present see the chapter on the crystal structure on p. 176. The films were prepared by distilling phosphane onto a substrate precooled to the desired temperature [3 to 7]. Deposition of PH3 at 40 K [4] or 35 K [3] resulted in the formation of amorphous films, indicated by the broad and structureless appearance of the V2 band. One or more annealing cycles yielded the crystalline phase [3, 4]. Deposition between 65 and 74 K gave films that revealed the fine structure of the 6 phase on first cooling [4]. 

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