The Structure of Rubidium Dithionate Rb2S2O6

Barnes, W. H.; Wendling, A. V.

doi:10.1524/zkri.1938.99.1.153

Cited by 3 publications

(3 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The Rb(2)−O distances range from 2.83 to 3.09 Å and thus are comparable to the Rb−O distances in Rb 2 S 2 O 6 . 12 As is shown in Table 2, the solid-state IR spectrum of (CH 3 SO 2 I) 2 •RbI 3 has features quite similar to those reported for the other methane sulfonyl halides. 13 (CH 3 SO 2 I) 4 •KI 3 •2I 2 .…”

Section: ■ Results and Discussionsupporting

confidence: 70%

See 1 more Smart Citation

Methanesulfonyl Iodide

2019

View full text Add to dashboard Cite

Methanesulfonyl iodide is produced in aqueous solutions from the reaction of triiodide with methanesulfinate. Dichroic crystals of (CH 3 SO 2 I) 4 •KI 3 •2I 2 are formed from KI/I 2 solutions with high concentrations of CH 3 SO 2 − , while dichroic crystals of (CH 3 SO 2 I) 2 • RbI 3 are formed from RbI/I 2 solutions. X-ray crystallography of these two compounds shows that the CH 3 SO 2 I molecules coordinate through their oxygen atoms to the metal cations and that the S−I bond length is 2.44 Å. At low concentrations of CH 3 SO 2 − , the solutions remain homogeneous and the sulfonyl iodide is formed in a rapid equilibrium: CH 3 SO 2 − + I 3 − ⇌ CH 3 SO 2 I + 2I − , K MSI = 1.07 ± 0.01 M at 25 °C (μ = 0.1 M, NaClO 4 ). The sulfonyl iodide solutions display an absorbance maximum at 309 nm with a molar absorptivity of 667 M −1 cm −1 . Stopped-flow studies reveal that the equilibrium is established within the dead time of the instrument (∼2 ms). Solutions of CH 3 SO 2 I decompose slowly to form the sulfonate: CH 3 SO 2 I + H 2 O → CH 3 SO 3 − + I − + 2H + , k hyd . In dilute phosphate buffer, this decomposition occurs with k hyd = 2.0 × 10 −4 s −1 ; the decomposition rate shows an inverse-squared dependence on [I − ] because of the K MSI equilibrium.

show abstract

Section: ■ Results and Discussionsupporting

confidence: 70%

“…They have approximate hexagonal bipyramidal coordination with six equatorial MSI oxygen atoms, one axial I 3 – iodine atom, and an axial I 3 – η 2 bonded. The Rb(2)–O distances range from 2.83 to 3.09 Å and thus are comparable to the Rb–O distances in Rb 2 S 2 O 6 …”

Section: Resultsmentioning

confidence: 55%