SodiumN-bromo-2,4-dichlorobenzenesulfonamidate sesquihydrate

Abstract

The title compound [systematic name: μ2-aqua-diaquabis(μ3-N-bromo-2,4-dichloro­benzene­sulfonamidato)disodium(I)], Na+·C6H3BrCl2NO2S−·1.5H2O, crystallizes with two sodium cations, two N-bromo-2,4-dichloro­benzene­sulfonamidate anions and three water mol­ecules in the asymmetric unit, similar to sodium N-bromo­benzene­sulfon­amidate, sodium N-bromo-4-chloro­benzene­sulfon­amidate and sodium N-bromo-2-methyl-4-chloro­benzene­sulfon­amidate. A crystallographic twofold rotation axis passes through one of the water molecules. There is no inter­action between the nitro­gen atoms and sodium ions. The sodium ion shows octa­hedral coordination by three O atoms of water mol­ecules and by three sulfonyl O atoms of three different N-bromo-2,4-dichloro­benzene­sulfonamidate anions. The S—N distance of 1.590 (6) Å is consistent with an S=N double bond. The Na+ ion coordination in the structure gives rise to several hydrogen bonds between water mol­ecules and N or Br atoms.