The title compound, poly[
TDD, forms an infinite three-dimensional structure containing five-coordinate (Li/5) and six-coordinate (Li/6) Li+
cations. Li/5 is coordinated by three water molecules, one carbonyl O atom and one sulfuryl O atom while Li/6 is coordinated by one water molecule, three carbonyl O atoms, and two sulfuryl O atoms. Each water molecule bridges two Li+
cations, while also hydrogen bonding to either one endocyclic N atom and one sulfuryl O atom or two endocyclic N atoms. While the endocyclic N atoms in the anion do not coordinate the Li+
cations, the carbonyl and sulfuryl groups each coordinate three Li+
cations, which gives rise to the infinite three-dimensional structure.