Application of Electrochemical Fluorination to the Synthesis of Perfluoroalkane Sulfonic Acid Electrolytes: Preparation of

O’Sullivan, E. J.; Klink, F. W.; Liu, C. C.; Yeager, Ernest

doi:10.1149/1.2113591

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The gas‐phase structure of bis(fluorosulfonyl)difluoromethane, (SO₂F)₂CF₂

Weiss

Waterfeld

Gard

et al. 1994

Zeitschrift anorg allge chemie

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New synthetic pathways and the infrared spectrum of bis(fluorosulfonyl)difluoromethane, (SO2F)2CF2, are reported. The geometric structure and conformational properties of the title compound have been studied by gas electron diffraction. Depending on the rotational position of the two SO2F groups, four conformers with different symmetries can occur in this compound: C2v symmetry, if both SF bonds stagger the CF2 group. C2 or Cs symmetry, if one SO bond of each group staggers the CF2 group. The experimental electron diffraction intensities can be fitted equally well with a C1 conformer or with a mixture of C2v, C2 and Cs conformers, in a ratio of 3:2:5. The following geometric parameters (ra distances, ∠α angles with 3σ uncertainties) were derived: CF = 1.340(6) Å, SO = 1.412(2) Å, SF = 1.550(3) Å, CS = 1.848(4) Å, SCS = 113.6(7)°, FCF = 110.0(10)°, OSO = 124.6(18)°, CSF = 96.5(16)° and CSO = 108.4(14)°.

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