Bläsing Kevin, Labbow Rene, Schulz Axel, Villinger Alexander
Institut für Chemie, Universität Rostock, Albert-Einstein-Strasse 3a, 18059, Rostock, Germany.
Leibniz-Institut für Katalyse e.V., Albert-Einstein-Strasse 29a, 18059, Rostock, Germany.
Angew Chem Int Ed Engl. 2021 Jun 14;60(25):13798-13802. doi: 10.1002/anie.202104733. Epub 2021 May 11.
The chemistry of silylated sulfuric acid, O S(OSiMe ) (T SO , T=Me Si; also known as bis(trimethylsilyl) sulfate), has been studied in detail with the aim of synthesizing the formal autosilylation products of silylated sulfuric acid, [T SO ] and [TSO ] , in analogy to the known protonated species, [H SO ] and [HSO ] . The synthesis of the [TSO ] ion only succeeds when a base, such as OPMe that forms a weakly coordinating cation upon silylation, is reacted with T SO , resulting in the formation of [Me POT] [TSO ] . [T SO ] salts could be isolated starting from T SO in the reaction with [T-H-T] [B(C F ) ] or T [CHB Br H ] when a weakly coordinating anion is used as counterion. All silylated compounds could be crystallized and structurally characterized.
硅烷化硫酸O=S(OSiMe₃)₂（T₂SO₄，T = Me₃Si；也称为双（三甲基硅基）硫酸酯）的化学性质已被详细研究，目的是合成硅烷化硫酸的形式自硅烷化产物[T₂SO₄]²⁻和[TSO₄]⁻，类似于已知的质子化物种[H₂SO₄]和[HSO₄]⁻。只有当一种碱（如OPMe₃，在硅烷化时形成弱配位阳离子）与T₂SO₄反应，生成[Me₃POT][TSO₄]时，[TSO₄]⁻离子的合成才会成功。当使用弱配位阴离子作为抗衡离子时，[T₂SO₄]盐可以从T₂SO₄与[T-H-T][B(C₆F₅)₄]或T[CHB₁₁Br₁₁H]的反应中分离出来。所有硅烷化化合物都可以结晶并进行结构表征。
