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Abstract
The crystal structures of (CNSSS)2(AsF6)2, (CNSSS)2(SbF6)2, and two phases of (CNSSS)2(Sb2F11)2 have been determined. The AsF6 −, SbF6 −, and α-Sb2F11 − salts crystallize as reddish-brown plates whereas the β-Sb2F11 − salt crystallizes as green rods. The dication ß+SSSNCCNSSS+ß (12+) is the same in all four structures and consists of two 7π rings linked by a sp2-sp2 C-C bond (1.462 Å in 1 (AsF6)2). The packing in the four structures is similar with stacks of dications along the a-axis and alternating sheets of dications and anions lying in the bc-plane. The differences in the dication-dication contacts is reflected in the variable temperature magnetic data.
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