Structures of nonadecasulfur(2+) bis[hexafluoroantimonate(1–)] S19(SbF6)2, octasulfur(2+) di-μ-fluoro-dodecafluorotriantimonate(1–) hexafluoroantimonate(1–) S8(Sb3F14)(SbF6), and tetrasulfur(2+) di-μ-fluoro-difluorodiantimony(2+) μ-fluoro-tetrafluorodiantimony(1+) pentakis[hexafluoroantimonate(1–)] S4(Sb2F4)(Sb2F5)(SbF6)5

Structures, Energies, and Fundamental Vibrations of the Sulfonium Ions H3Sn+ (n = 1-4)

“…We have studied the two protonated tetrasulfanes [H 2 S±S±S±SH] + (4 a) and [HS±S(H)±S±SH] + (4 b) as well as the experimentally known species [S(SH) 3 ] + (4 c) shown in Figure 2. This latter statement is in contrast to the structure of the [S 19 ][SbF 6 ] cation which is the only species containing a SS 3 structural unit and of which a crystal structure determination is known [21]. Isomer 4 b represents the global minimum but 4 a and 4 c are only slightly less stable on the basis of their absolute Gibbs free energies at 298 K (see below).…”

Heterocations in Superacid Systems

“…888 From the analytical data, the solid appeared to have a composition corresponding to S 16 (AsF 6 ) 2 . 886 In both systems, there is a very noticeable short-long bond alternation. The cryoscopic measurements were also consistent with the formulation of this ion as S 16 2þ .…”

“…In contrast, all the dipositive ions have been obtained in the form of relatively stable salts such as S 4 2þ (FSO 3 À ) 2 and S 8 2þ (AsF 6 À ) 2 . 886 The average SÀS single bond length in the cation is 2.051 A and all sulfur atoms exhibit at least one SÀF contact. 884 In the case of S 8 2þ (AsF 6 À ) 2 a single-crystal X-ray crystallographic analysis showed unequivocally that this cation has an exo-endo cyclic structure with a long transannular bond (341).…”

Der erste Schritt der Oxidation elementaren Schwefels – die Struktur des Schwefelradikalkations [S8].+ im Kristall

“…Der Stand der Forschung wurde mehrfach zusammengefasst . Insbesondere die umfangreichen Arbeiten von Gillespie, Passmore und ihren Mitarbeitern führten zur Entdeckung der drei zurzeit bekannten, kristallographisch charakterisierten, homopolyatomaren Schwefelkationen [S 4 ] 2+ , [S 8 ] 2+ , und [S 19 ] 2+ . Alle bekannten, strukturell charakterisierten homopolyatomaren Schwefelkationen sind Dikationen und wurden als [AsF 6 ] − ‐ oder [SbF 6 ] − ‐Salze kristallisiert.…”