Structure of bis(pentamethyldiethylenetriamine)disodium hexasulfide

The new sodium sulfide compound, #-hexasulfidolt~2S1,S 6:2n 2S1,S 6_bis{[N_(dimethylaminoethyl)_N,N,,_ N'-trimethyl- 1,2-ethanediamine-t~3N, N',N"]sodium},[Na(pmdeta)]2[S6] (1) [pmdeta = (Me2NCH2CH2)2NMe],was obtained by reacting two equivalents of sodium hydride with elementary sulfur in toluene containing an excess of pmdeta at approximately 238 K. The crystal structure contains a central Na2p. ring in which both S atoms are part of an S~- residue. In addition, each Na atom is coordinated by a pmdeta molecule.