Amidosulfite

Amidosulfites are chemical compounds containing the group =NS(O)O-.

Substituents can attach two bonds to the nitrogen and one to the oxygen.

These have the form RR'NS(O)OR" compounds can be a zwitterion with a positive charge on the nitrogen, and a negative charge on the oxygen, which then has no group attached.

These are purportedly produced when sulfur dioxide mixes with ammonia in ratios 1:1 or 1:2.

[1] Known compounds include N-(2-dimethylammonio-ethyl)amidosulfite, N-(2-diethylammonio-ethyl)amidosulfite, N-[2-(1-Piperidinium-1-yl)-ethyl]amidosulfite, N-[2-(4-Morpholinium-4-yl)-ethyl]amidosulfite, sodium N-ethylamidosulfite (C2H5NHS(O)ONa), Ethyl N-ethylamidosulfite (C2H5NHS(O)OC2H5), diethyl-phosphanyl N-methylamidosulfite, diphenyl-phosphanyl N-methylamidosulfite, N,N-dimethylamidosulfurous acid, N,N-diethylamidosulfurous acid, N,N-bis(2-hydroxyethyl)diethylamidosulfurous acid, sodium N,N-dimethylamidosulfite, sodium N,N-diethylamidosulfite, lithium N,N-diethylamidosulfite, lithium N-hexafluoroisopropylideneamidosulfite (with double bond to nitrogen), sodium 1-piperidinesulfinate Na(CH2)5NHS(O)O.