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Structure of Cupric Salts with Mono-, Di- and Tri-chloroacetic Acids

Abstract

IN former communications1, we reported that the cupric salts, anhydrous or hydrated, with n- and iso-monocarboxylic acids might consist of the dimeric molecules having a sort of copper-to-copper linkage. In continuation of these researches, we have recently examined the structure of cupric salts with mono-, di- and tri-chloroacetic acids, using the criteria previously derived: (1) the cupric alkanoates involving the dimeric molecules show, in addition to a band at about 43 × 1013 c./s., an absorption band of a special kind at about 80 × 1013 c./s., which was regarded as due possibly to the presence of the copper-to-copper linkage; (2) the polarization of the latter band is the reverse of the polarization of the former.

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References

  1. 1

    Tsuchida, R., and Yamada, S., Nature, 176, 1171 (1955). Tsuchida, R., Yamada, S., and Nakamura, H., ibid., 178, 1192 (1956); Bull. Chem. Soc. Japan (in the press).

  2. 2

    Tsuchida, R., Kobayashi, M., Bull. Chem. Soc. Japan, 13, 619 (1938); “The Colour and the Structure of Metallic Compounds” (Osaka, 1944).

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