Abstract
IN course of a series of investigations1 in this laboratory on the complex compounds of biguanide and substituted biguanide with metallic elements, recently my pupil, K. Chakravorty, and I, have obtained a number of 4-co-ordinated silver ethylenebiguanide salts in which the central silver atom shows, rather strikingly, a primary valency of three. Their composition is given by , where X is SO4, NO3, ClO4, or OH; and EnBigH is one molecule of ethylenebiguanide (C4N5H9), which behaves as a chelate or bidentate molecule. The salts form beautiful, needle-shaped, prismatic crystals of deep red colour and are quite stable at ordinary temperature (20°–24° C.). The nitrate can be re-crystallized from warm dilute nitric acid. The colour of the base is dark violet-red resembling that of potassium permanganate.
Similar content being viewed by others
Article PDF
References
Rây and co-workers, J. Indian Chem. Soc., 671 (1937); 347, 350, 353, 633 (1938); 621, 629, 617 (1939); 217, 289, 298, 609 (1941); 1 (1942).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
RÂY, P. A New Type of Complex Silver Compounds with Tervalent Silver. Nature 151, 643 (1943). https://doi.org/10.1038/151643a0
Issue Date:
DOI: https://doi.org/10.1038/151643a0
Comments
By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.