Netzsch, Philip and Stroh, Regina and Pielnhofer, Florian and Krossing, Ingo and Hoeppe, Henning A. (2021) Strong Lewis and Bronsted Acidic Sites in the Borosulfate Mg-3[H2O -> B(SO4)(3)](2). ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 60 (19). pp. 10643-10646. ISSN 1433-7851, 1521-3773
Full text not available from this repository. (Request a copy)Abstract
Borosulfates provide fascinating structures and properties that go beyond a pure analogy to silicates. Mg-3[H2O -> B(SO4)(3)](2) is the first borosulfate featuring a boron atom solely coordinated by three tetrahedra. Thus, the free Lewis acidic site forms a Lewis acid-base adduct with a water molecule. This is unprecedented for borosulfate chemistry and even for borates. Quantum chemical calculations on water exchange reactions with BF3 and B(C6F5)(3) revealed a higher Lewis acidity for the borosulfate anion. Moreover, proton exchange reactions showed a higher Bronsted acidity than comparable silicates or phosphates. Additionally, Mg-3[H2O -> B(SO4)(3)](2) was characterised by X-ray diffraction, infrared spectroscopy, thermogravimetric analysis, and density functional theory (DFT) calculations.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | BORON-TRIFLUORIDE; SYSTEMS; WATER; borosulfates; Brø nsted acid; Lewis acid; Lewis acid base adduct; silicate analogue |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Anorganische Chemie > Chair Prof. Dr. Arno Pfitzner |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 14 Sep 2022 07:25 |
| Last Modified: | 14 Sep 2022 07:25 |
| URI: | https://pred.uni-regensburg.de/id/eprint/47413 |
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