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Published in Joseph C. Salamone, Polymeric Materials Encyclopedia, 2020
Oxidations of dithiols can be effected to give polysulfide polymers using oxygen, I2, sulfur chloride, DMSO, or bis(oxycarbonyl)disulfides.35–39 Polymers obtained using oxygen had relatively low molecular weight (ηinh, less than 0.6). Mn of polymer obtained using sulfur dichloride or iodine were several thousands. Oxidation of dithiol with DMSO at 160 °C gave polymer of relatively high molecular weight (Mn, up to 10500). Dithiols can be co-polymerized with organic sulfur compounds such as bis(dithiocarbonylchloride), or 1,2-bis(ethoxycarbonyldithio)ethane (Equations 5 and 6).40–42
Chemicals from Non-hydrocarbons
Published in James G. Speight, Handbook of Petrochemical Processes, 2019
Several sulfur halides are important to modern industry. For example, sulfur hexafluoride (SF6) is a dense gas that is used as an insulator in high-voltage transformers. Sulfur hexafluoride is also a nonreactive and nontoxic propellant for pressurized containers. Sulfur dichloride (SCl2) and disulfur dichloride (S2Cl2) are important industrial chemicals.
Properties of the Elements and Inorganic Compounds
Published in W. M. Haynes, David R. Lide, Thomas J. Bruno, CRC Handbook of Chemistry and Physics, 2016
W. M. Haynes, David R. Lide, Thomas J. Bruno
2724 Sulfur (monoclinic) 2736 Sulfur bromide [SSBr2] 2743 Sulfur bromide pentafluoride 2737 Sulfur chloride [SSCl2] 2744 Sulfur chloride pentafluoride 2745 Sulfur decafluoride 2740 Sulfur dichloride 2732 Sulfur dioxide 2738 Sulfur fluoride [SSF2] 2739 Sulfur fluoride (FSSF) 2756 Sulfur fluoride hypofluorite 2755 2742 2725 2730 Sulfur fluoride oxide [SOF4] Sulfur hexafluoride Sulfuric acid Sulfurous acid
Visual and colorimetric determination of mercury (II) based on lignosulfonate-capped silver nanoparticles
Published in Green Chemistry Letters and Reviews, 2023
Xueling Cao, Lin Zhu, Ge Yu, Xinxing Zhang, Hua Jin, Danfeng He
Figure 2b shows the X-ray diffraction spectra of lignosulfonate, L–AgNPs, and L–AgNPs added with mercury (II). Sodium lignosulfonate is a kind of anionic surfactant, which is the reaction product of wood pulp with sulfur dichloride and sulfite, so the product contains many NaCl and Na2SO4. Through the match of NaCl (JCPDS No. 3050628) and Na2SO4 (JCPDS No. 37-1465), the XRD of lignosulfonate showed that the crystal diffraction peaks mainly came from NaCl and Na2SO4 (Figure 2-S) (36, 37). The five peaks observed at 2 θ = 38.12°, 44.2°, 64.37°, 77.50°, and 81.38° in the spectrum corresponded to (111), (200), (220), (311), and (222), respectively. These peaks were the same as the silver crystal structure in JCPDS No. 89–3722 and matched previously reported peaks (32, 38, 39). However, lignosulfonate did not contain these diffraction peaks. The appearance of these diffraction peaks after the synthesis of L–AgNPs indicated that high-purity AgNPs were prepared through the method used in this study. The XRD spectra obtained after the addition of mercury (II) ions were discussed in detail below.
3,4-Dichloro-1,2,5-thiadiazole: a commercially available electrophilic sulfur transfer agent and safe resource of ethanedinitrile
Published in Journal of Sulfur Chemistry, 2022
Hayedeh Gorjian, Nader Ghaffari Khaligh
A possible mechanism was proposed for the current protocol of symmetrical trisulfide synthesis based on 3,4-disubstituted-1,2,5-thiadiazoles preparation through 3,4-dichloro-1,3,4-thiadiazole ring-opening [58] and 3,4-dichloro-1,2,5-thiadiazole synthesis via the reaction of cyanogen and mono- or di-sulfur dichloride [59,60] (Scheme 2). Initially, triethylamine activates thiol, followed by the sulfur atom attack to the sulfur atom of 3,4-dichloro-1,2,5-thiadiazole, which leads to the ring-opening, and chloride anion is released. Then, the second activated thiol molecule attacks the intermediate sulfur atom (I), which gives trisulfide and C2N2.
Synthesis and chemical properties of Di(2-fluoro-2-polyfluoroalkyl- alkenyl)sulfides and 2,6-bis(polyfluoroalkyl)-1,4-oxathiine 4,4-dioxides
Published in Journal of Sulfur Chemistry, 2019
Yaroslav Borodkin, Eduard Rusanov, Anatolii Marchenko, Yuriy Koidan, Yuriy Shermolovich
Divinyl sulfide and many of its derivatives are known as prospective monomers [1,2], cross-linking agents and intermediates for the synthesis of fine organic chemicals, in particular chalcogen-containing heterocycles [3–9]. The dehydrohalogenation reactions of chloro(bromo) alkylsulfides [11,12] and the reactions of sulfur dichloride with acetylenes [9,10] are also used for obtaining halogen-containing divinyl sulfides.