作者:Makoto Watanabe、Shoji Sato、Khosaku Wakasugi
DOI:10.1246/bcsj.63.1243
日期:1990.4
Crystalline tetrasodium imidodiphosphate decahydrate, Na4P2O6NH·10H2O, was directly converted to diphosphate by heating above 200°C in air according to the equation:Na_2O_3PNHPO_3Na_2+H_2O→Na_2O_3POPO_3Na_2+H_3Amorphous tetrasodium imidodiphosphate was prepared by stirring the crystalline imidodiphosphate in excess ethanol. The substitution of an imino group of the amorphous imidodiphosphate for bridging oxygen took place much faster than that of the crystalline one. Imidodiphosphate was hydrolyzed to phosphoramidate and orthophosphate in an aqueous solution:Na_2O_3PNHPO_3Na_2+H_2O→Na_2PO_3NH_2+Na_2HPO_4
结晶四钠亚磷酸二氢盐十水合物(Na4P2O6NH·10H2O)在空气中加热超过200°C后直接转化为二磷酸,反应方程式为:
\[ \textNa}_2\textO}_3\textP}\textNHPO}_3\textNa}_2 + \textH}_2\textO} \rightarrow \textNa}_2\textO}_3\textPOPO}_3\textNa}_2 + \textH}_3 \]
无定形四钠亚磷酸二氢盐是通过在过量乙醇中搅拌结晶亚磷酸二氢盐制备的。无定形亚磷酸二氢盐的亚氨基取代桥接氧团的速率比结晶形式快得多。亚磷酸二氢盐在水溶液中水解为磷酰氨和正磷酸:
\[ \textNa}_2\textO}_3\textP}\textNHPO}_3\textNa}_2 + \textH}_2\textO} \rightarrow \textNa}_2\textPO}_3\textNH}_2 + \textNa}_2\textHPO}_4 \]