The crystal structure of NOSO₃Cl

Abstract

NOS03CI forms monoclinic crystals with space group P21/c. The unit cell with dimensions a = 8.997 A, b = 7.101 8, and c = 7.557 A, / 3 = 109.80", contains four molecules, all atoms are in general fourfold positions. The structure was solved by vector analysis and fourier synthesis, followed by a least squares refinement using photometered CuKa reflections. Discrete NO+ and SO3CI-ions are present. The so3c1-ion has C3" symmetry. The S-C1 distance is 2.05 A, IntroductionThe determination of the structure of NOS03Cl in the solid phase was carried out as part of the investigation of the system S03-ClNO 1 and to facilitate the interpretation of the Raman and infrared spectra of the compound 2.

The reaction of NH4Cl with SO3: Two modifications of (NH4)[SO3Cl]

“…As mentioned in the introduction, vibrational data of chlorosulfonates have been reported already in the 1960s [6,7] . A detailed interpretation of vibrational spectra was given slightly later, [8] including an assignment of observed vibrations for (NH 4 )[SO 3 Cl].…”

“…In contrast to the importance of the acid, the knowledge of its salts is remarkably limited, [3,4] even if first reports can be traced back to 1871 [5] . The first communication on the structure of a chlorosulfonate, namely (NO)[SO 3 Cl], originates from 1967, [6] although vibrational data have been reported earlier, [7] or at least almost at that time [8,9] . Furthermore, the structure of Ca[SO 3 Cl] 2 has been reported in the late 1990s, [10] and the tetrakis (chlorosulfato)borate anion has been structurally elucidated for K[B(SO 3 Cl) 4 ] and Li[B(SO 3 Cl) 4 ] [11,12] .…”