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Solid polybromide-containing functional polymers were obtained from basic anionexchange resins. The chloride or hydroxide anions of the commercial resins were exchanged by bromide, then dried under anaerobic conditions and allowed to react with a gaseous bromine phase. The formation of linear, slightly asymmetric tribromides was proved by Raman and far-IR spectroscopy. The tribromide spectra are characterized by the symmetrical stretching vibration v1 at about 160 cm-I and the antisymmetric stretching vibration v3 at about 200 em-'. If the Br,:Brmolar ratio is greater than 1 an additional band could be observed at about 255 cm-'. This band is assigned to the stretching vibration of coordinated bromine. It is shifted in the direction of free bromine at about 300 cm-' with increasing bromine content in the functional polymers. According to the spectroscopic results, the anion structure in amorphous polybromide-containing functionai polymers can be explained by tribromide ions and bromine molecules interacting with the tribromide. The thermal instability of higher polybromides was also proved spectroscopically.

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1992 electric properties, superconductors, semiconductors electric properties, superconductors, semiconductors D 8000 -012Room Temperature Molten Polyiodides.-Room temp. molten polyiodides are obtained from the reaction of dry I2 with iodides of large cations R+: MeEt3N+, Oc4N+ (Oc: octyl) and Et3S+ (80 • C, sealed glass-tube, 6 h). The liquid polyiodides exhibit electrical conductivities in the range 10-3 to 4·10-2 s/cm. For the R4NIx compounds (x = 3, 5, 7, 9), it is found that the electric conductivity increases with increasing polyiodide chain (i.e., with increasing x) and, therefore, it is excluded that an ionic transport mechanism is responsible for the conduction behavior. A Grotthus-like charge transfer along the polyiode chains is proposed to explain the conduction behavior of the molten iodides. -(STEGEMANN, H.; ROHDE, A.; REICHE, A.; SCHNITTKE, A.; FUELLBIER, H.; Electrochim. Acta 37 (1992) 3, 379-383; Dep. Chem., Univ. Greifswald, O-2200 Greifswald, Fed. Rep. Ger.; EN)