See, Kimberly A., Leskes, Michal, Griffin, John M., Britto, Sylvia, Matthews, Peter D., Emly, Alexandra, Van der Ven, Anton, Wright, Dominic S., Morris, Andrew J., Grey, Clare P., Seshadri, Ram, "Ab Initio Structure Search and in Situ 7Li NMR Studies of Discharge Products in the Li–S Battery System", Journal of the American Chemical Society, 2014