ISSN:
0044-2313
Keywords:
Methoxy(oxy)sulfonium hexafluoroarsenate
;
preparation
;
IR spectra
;
force field calculation
;
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
Crystal Structure, Vibrational Spectra, and Valence Force Field of Methoxy(oxy)-sulfonium Hexafluoroarsenate CH3OSO+ AsF6-Methoxy(oxy)sulfonium hexafluoroarsenate CH3OSO+ AsF6- crystallizes in the monoclinic space group P21/n with a = 547,0(4) pm, b = 1 728.1(5) pm, c = 767.8(4) pm, β = 106.69(4)°, Z = 4. The cation is planar with bond distances d(CO) = 150.2(9) pm, d(SO) = 150.5(5) pm, d(SO) = 139.7(5) pm and angles ∢ (COS) = 125.8(4)°, ∢ (OSO) = 114.9(3)°.The vibrational frequencies of the cation are discussed with correspondence to the values of 34S and 18O labelled substituted species. A force field calculation equates f(CO) = 3.75 Ncm-1, f(SO) = 6.91 Ncm-1, f(SO) = 10.81 Ncm-1.
Notes:
Methoxy(oxy)sulfonium-hexafluoroarsenat CH3OSO+ AsF6- kristallisiert in der monoklinen Raumgruppe P21/n mit a = 547,0(4) pm, b = 1 728,1(5) pm, c = 767,8(4) pm, β = 106,69(4)°, Z = 4. Das Kation ist planar mit Bindungsabständen von d(CO) = 150,2(9) pm, d(SO) = 150,5(5) pm, d(SO) = 139,7(5) pm und Winkeln ∢ (COS) = 125,8(4)°, ∢ (OSO) = 114,9(3)°.Die Schwingungsfrequenzen des Kations werden unter Einbeziehung der 34S und 18O markierten Spezies diskutiert. Eine Kraftfeldberechnung ergibt f(CO) = 3,75 Ncm-1, f(SO) = 6,91 Ncm-1, f(SO) = 10,81 Ncm-1.
Additional Material:
3 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/zaac.19916060116
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