Abstract
THE measurement of pleochroism in crystals of aromatic compounds has seldom been carried out, notwithstanding its importance from the theoretical as well as the experimental point of view. This was mainly due to the difficulties in obtaining crystal pieces suitable for the measurement. Tsuchida and Kobayashi1 have devised an apparatus which consists in principle of a polarizing microscope and a sector photometer, and enables the measurement of dichroism with microcrystals obtained by ordinary procedures of preparation of substances. By this method the dichroism of metallic complexes2,3 and aromatic compounds has been determined4.
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References
Tsuchida, R., and Kobayashi, M., Bull. Chem. Soc. Japan, 13, 619 (1938); J. Chem. Soc. Japan, 60, 769 (1939); “The Colours and the Structures of Metallic Compounds” (Osaka, 1944).
Tsuchida, R., Yamada, S., and Yoneda, H., J. Chem. Soc. Japan, 69, 145 (1948).
Yamada, S., and Tsuchida, E., J. Chem. Soc. Japan, 70, 44 (1949).
Tsuchida, R., Kobayashi, M., and Nakamoto, K., J. Chem. Soc. Japan, 70, 12 (1949).
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TSUCHIDA, R., KOBAYASHI, M. & NAKAMOTO, K. Peculiarity of Dichroism of Aromatic Molecular Compounds. Nature 167, 726 (1951). https://doi.org/10.1038/167726a0
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DOI: https://doi.org/10.1038/167726a0
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