Zur Kristallchemie des Radiums

  title={Zur Kristallchemie des Radiums},
  author={Fritz Weigel and A. Trinkl},
allowing simple analytical fluorine determination by direct titration or PbCIF precipitation. The low boiling point of trimethylfluorosilane (16.4 °C) was expected to be troublesome, but it was found that trimethylfluorosilane solutions in benzene are very stable even on heating to 80 °C, probably because of the formation of π-complexes. The fluorine yields obtained after radiochemical purification by CaS04 separation and subsequent NH4F sublimation varied between 40 and 60%. The radiochemical… 
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