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Laser-Raman Spectra of Gaseous BiBr3 and PbCl2

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Raman spectra are reported for gaseous BiBr3 and PbCl2 at temperatures just above their boiling points. The strong resonance fluorescence due to subhalide species that is normally observed in these vapors (with 4880 Å excitation) was suppressed by addition of equimolar amounts of the corresponding mercuric halide. The observed Raman bands for the BiBr3-HgBr2 sample, which are attributable to BiBr3, confirm a pyramidal structure having C3v point symmetry. The spectrum attributable to PbCl2 in the case of the PbCl2-HgCl2 sample is consistent with a symmetric bent structure.

Keywords: Fluorescence; Gas spectra; Molecular structure; Raman spectroscopy

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/000370273774333209

Affiliations: Chemical Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439

Publication date: November 1, 1973

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