German published patent application 2,710,399 discloses a process for the manufacture of ammonium sulfamate involving introducing sulfur trioxide and ammonia into a pressure vessel containing a melt that mainly consists of ammonium sulfamate and ammonium imidosulfamate, while maintaining a molar ratio between NH.sub.3 and SO.sub.3 from 1.5:1 to 1.99:1. It has now been found that the pressure vessel is suitably released from pressure for a short period of time after prolonged reaction times to discharge thus the main quantity of the collecting inert gases.
Crystal structure and the infrared and Raman spectra of potassium nitridosulphonate hydrate, K<sub>3</sub>[N(SO<sub>3</sub>)<sub>2</sub>]·H<sub>2</sub>O
作者:John R. Hall、Robert A. Johnson、Colin H. L. Kennard、Graham Smith、Brian W. Skelton、Allan H. White
DOI:10.1039/dt9800001091
日期:——
K3[N(SO3)3]·2H2O [1.71(2)], and NH3+ SO3–[1.76(2)Å]. This contraction is attributed to the participation of the two lone pairs of electrons on nitrogen in π bonding. The i.r. (50–4 000 cm–1) and Raman spectra of K3[N(SO3)2]·H2O and its 15N and 2H derivatives at 77 K are reported and interpreted according to the crystalstructure. To assist with the assignment, spectra of the anhydrous salt K3[N(SO3)2]