Summary
-
(1)
Measurements have been made on the magnetic susceptibilities of succinic acid and its anhydride. The susceptibilities are:
$$\chi _M = - 57 \cdot 47 \times 10^{ - 6} for the acid$$;
$$\chi _M = - 43 \cdot 85 \times 10^{ - 6} for the anhydride$$.
-
(2)
The difference between the gram-molecular susceptibilities of succinic acid and its anhydride is that of a molecule of water. This is to be expected, both from considerations based on the additivity law, and from observations on other acids and their anhydrides, namely camphoric acid, maleic acid and their corresponding anhydrides.
-
(3)
The difference of about 13 is numerically more than can be attributed to two atoms of hydrogen and one of singly linked oxygen, which will give only 10·47.
-
(4)
The extra effect is attributed to the formation of a ring in the anhydride, the paramagnetic contribution of which may be taken as about +2·5.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Singh, B. K., Agarwal, S. L., and Singh, M.Proc. Nat. Acad. Sci., A, 1944,14, 72.
Gray, F. W., and Birse, W. M.J. Chem. Soc., 1914,105, 2707.
— Pascal’s value as given inInternational Critical Tables, 1929,6, 361.
Baeyer, A.,Ber., 1885,18, 2277. SachseIbid., Ber., 1890,23, 1363;Zeit. physikal. chem., 1892,10, 203. MohrJ. prakt. chem., 1918, (2)98, 349; 1922,103, 316. Beesley, R. M., Ingold, C. K., and Thorpe, J. F.J. Chem. Soc., 1915,105, 1080. Baker, J. W., and Ingold, C. K.Ibid. J. Chem. Soc., 1923,123, 122. Ingold, C. K., and Thorpe, J. F.Ibid. J. Chem. Soc., 1928, 1318.
Carothers, W. H., and Hill, J. W.J. Am. Chem. Soc., 1933,55, 5043.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Singh, B.K., Manhas, K.M.S., Agarwal, S.L. et al. The diamagnetic susceptibilities of succinic acid and succinic anhydride. Proc. Indian Acad. Sci. (Math. Sci.) 22, 163 (1945). https://doi.org/10.1007/BF03170925
Received:
DOI: https://doi.org/10.1007/BF03170925