Les spectres Raman des halogénures de la mono‐ et de la diméthyl‐arsine

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Abstract
The Raman spectra of (CH3)2AsCl, (CH3)2AsBr, (CH3)2AsI and of CH3AsCl2, CH3AsBr2 and CH3AsI2 are reported. For (CH3)2AsCl and CH3AsCl2 depolarization factor measurements were made. A description of these methods is briefly outlined. The results of this spectral investigation indicate that all these compounds may be described by a structure of symmetry C1h = Cs. The results are interpreted in terms of bond contraction of the As‐Cl bond by substituting Cl for CH3 in (CH3)2AsCl, CH3AsCl2 and AsCl3. These contractions are in full agreement with the previous theory of Skinner and Sutton.

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