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SCl 2 is produced by the chlorination of either elemental sulfur or disulfur dichloride. [1] The process occurs in a series of steps, some of which are: S 8 + 4 Cl 2 → 4 S 2 Cl 2; ΔH = −58.2 kJ/mol S 2 Cl 2 + Cl 2 ↔ 2 SCl 2; ΔH = −40.6 kJ/mol. The addition of Cl 2 to S 2 Cl 2 has been proposed to proceed via a mixed valence ...
S 8 + 4 Cl 2 → 4 S 2 Cl 2, ΔH = −58.2 kJ/mol. Excess chlorine produces sulfur dichloride, which causes the liquid to become less yellow and more orange-red: S 2 Cl 2 + Cl 2 ⇌ 2 SCl 2, ΔH = −40.6 kJ/mol. The reaction is reversible, and upon standing, SCl 2 releases chlorine to revert to the disulfur dichloride.
Sulfuryl chloride is used as a source of Cl 2. Because it is a pourable liquid, it is considered more convenient than Cl 2 to dispense. Sulfuryl chloride is used in the conversion of C−H to C−Cl adjacent to activating substituents such as carbonyls and sulfoxides: [5] [6] RC(O)CH 2 R' + SO 2 Cl 2 → RC(O)CHClR' + HCl + SO 2
Disulfur dichloride, S 2 Cl 2; Sulfur dichloride, SCl 2; Sulfur tetrachloride, SCl 4 This page was last edited on 14 June 2022 ...
The following chart shows the solubility of various ionic compounds in water at 1 atm pressure and room temperature (approx. 25 °C, 298.15 K). "Soluble" means the ionic compound doesn't precipitate, while "slightly soluble" and "insoluble" mean that a solid will precipitate; "slightly soluble" compounds like calcium sulfate may require heat to precipitate.
The ground state of S 2 is a triplet: a diradical, with two unpaired electrons like O 2 and SO. [6] It has the S-S bond length of 189 pm, much shorter than the S-S single bonds in S 8, which are 206 pm long. Its Raman spectrum consists of a band at 715 cm −1. [7] The corresponding O-O band for O 2 is found at 1556 cm −1. [8]
Dichlorine monoxide reacts with metal halides, with the loss of Cl 2, to form unusual oxyhalides. [11] [12] [3] VOCl 3 + Cl 2 O → VO 2 Cl + 2 Cl 2 TiCl 4 + Cl 2 O → TiOCl 2 + 2 Cl 2 SbCl 5 + 2 Cl 2 O → SbO 2 Cl + 4 Cl 2. Similar reactions have also been observed with certain inorganic halides. [13] [14] AsCl 3 + 2 Cl 2 O → AsO 2 Cl + 3 ...
[3] [4] [5] In the vapour phase the SrCl 2 molecule is non-linear with a Cl-Sr-Cl angle of approximately 130°. [6] This is an exception to VSEPR theory which would predict a linear structure. Ab initio calculations have been cited to propose that contributions from d orbitals in the shell below the valence shell are responsible. [ 7 ]