O. B. Helfrich, E. Emmet Reid
1921 Journal of the American Chemical Society  
TAN 59 1 cjolved in a mixture of the fused amides at temperatures as low as 100" exhibit the characteristic blue color of the solutions of these metals in liquid ammonia, which resembles in every way the blue color which appears when metallic sodium is treated with ammonia gas slightly above .he melting point of the amide. summary. Sodium amide was prepared from pure sodium metal and water-free :liquid ammonia, using a platinized platinum gauze as a catalyst. The amide was found to be a white
more » ... ystalline solid melting at 208" and having a specific conductivity of 1.665 * 0.005 mho at 210°, when platinum electrodes were used. The specific conductivity found by 'Wohler and Stanglund, using nickel electrodes, is 0.593 mho at 210". 'l'he conductivity was found to increase with increasing temperature, but qualitative results only could be obtained, due to the decomposition of ihe substance. Platinum metal was found to catalyze the deconipositioii of sodium amide into either sodium imide or nitride, with the evolution of ammonia gas, the platinum at the same time being dissolved. No blue solutions of sodium metal in fused sodium amide, as reported hy Titherly, could be obtained. This investigation was begun under the direction of the late Dr. William L. Argo, who died during the war while in military service in France. 'I'he author wishes to acknowledge his indebtedness to Professor William C'. Bray for his encouragement and many helpful suggestions. TUCSON, AEUONA.
doi:10.1021/ja01436a024 fatcat:qxavxmudf5fpzl5t7wmxsaol6m