Sulfur solid state structure

Abstract Inorganic polysulfide anions and the related radical anions S play an important role in the redox reactions of elemental sulfur and therefore also in the geobio chemical sulfur cycle. This chapter describes the preparation of the solid polysulfides with up to eight sulfur atoms and univalent cations, as well as their solid state structures, vibrational spectra and their behavior in aqueous and non-aqueous solutions. In addition, the highly colored and reactive radical anions S with n = 2, 3, and 6 are discussed, some of which exist in equilibrium with the corresponding diamagnetic dianions. 

The bis[l,2]dithiolo[5,4- ][5, 4 -< ][l,4]thiazine ring systems of Rees and co-workers easily extrude sulfur from the thiazine ring and undergo contraction to the fused pyrrole derivatives <1997CC879>. These tricycles generally have a nonplanar, scorpion-like solid-state structure <1998JOC2189> however, the dicarbonyl product of... 

The favorable bismuth-sulfur bond translates into thermal and hydrolytic stability for the thiolates of bismuth, which are currently more numerous than the alkoxide derivatives (Table II). Various monomeric trithiolates have been identified, and most adopt predictable structural formulas, although the solid-state structures reveal interesting intermolecular and intramolecular interactions. 

FIGURE 30. Solid-state structures of lithium organics with heterocyclic perimeters containing sulfur as a group 16 element... 

Cordes AW, Haddon RC, Oakley RT, Schneemeyer LF, Waszczak JV, Young KM, Zimmerman NM (1991) Molecular semiconductors from bifunctional dithia- and diselena-diazolyl radicals. Preparation and solid-state structural and electronic properties of 1,4-[(E2N2C)C6H4(CN2E2)] (E = sulfur, selenium). J Am Chem Soc 113 582-588... 

During studies on the interaction between sulfur donors and suitable acceptors, the solid-state structure of the charge-transfer adduct l,3-dithiane-2-thione- -diiodine 111 was investigated <1999IC4626> the CS3 moiety is planar, the I2 molecule lies in the same plane with the first iodine atom separated by 2.755 A and the I-I vector is practically co-linear with the S-I one. The I-I bond length is slightly elongated with respect to a free iodine molecule. 

Reaction of a stable carbene with sulfuric chloride results in abstraction of the chloride cation to give the adduct 48 (Scheme 27).57 The C2 carbon resonates at 133.05 ppm in the 13C NMR spectrum and the solid state structure exhibits a chlorine-NHC bond distance of 1.696(9) A. The fluor-ine-NHC analogue was prepared by Kuhn and co-workers by reaction of the stable carbene with S02F2.50 The solid state structure exhibits a fluorine-NHC bond distance of 1.291(14) A. 

Arsenic has a very well-developed mixed-valence chemistry with sulfur in part to the occurrence of several of these species as arsenic minerals. Tetraarsenic trisulfide, AS4S3, is orange-yeUow and occurs as the mineral dimorphite which is found in a and fi forms. The solid-state structure of both the a and fi forms exhibit C3, symmetry (15), differences arise due to crystal packing effects. ... 

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