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Fakultät für Chemie und Pharmazie - Digitale Hochschulschriften der LMU - Teil 04/06 Podcast
Protonierte Schwefelsäuren

Protonierte Schwefelsäuren

Fakultät für Chemie und Pharmazie - Digitale Hochschulschriften der LMU - Teil 04/06 vor 13 Jahren

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Most of the disulfuric acids like thiosulfuric acid (H2S2O3),
dithionous acid (H2S2O4), disulfurous acid, (H2S2O5), dithionic
acid (H2S2O6), disulfuric acid (H2S2O7) and peroxydisulfuric acid
(H2S2O8) have never been obtained as pure compounds, because they
are not stable at ambient temperatures. Therefore no experimental
evidences are known for their structures. In this thesis, the
synthesis and spectroscopical characterization of the disulfuric
acids H2S2Ox (x = 3,4,6,8) is presented. The compounds were
obtained by the reaction of dry Na2S2Ox or K2S2Ox with anhydrous HF
at −60 °C. The protonated species H3S2Oy+MF6− (y = 3 - 8) were
synthesized and characterized using the superacidic systems HF/MF5
(M = As, Sb). The protonation of sulfuric acid, (H3SO4+)n(GeF5−)n,
with the new superacidic system HF/GeF4 is presented and gives
evidence for the acid strength of this system. Moreover, the first
single crystal structure of protonated dimethylsulfoxide (DMSO),
[(CH3)2SOH+]4[Ge3F16]4− is discussed. The protonated forms of the
aminosulfonic acids NH3SO3, NH3CH2SO3, NH3C2H4SO3 and
methanesulfonamide (CH3SO2NH2) are described. In this context, the
first crystal structure of protonated taurine, NH3C2H4SO3H+SbF6− is
discussed.