Researchers at the Paderborn University, Germany have reported being able to make a unique class of catalysts – used in chemistry to accelerate reactions – called “Lewis super-acids” These ...

Several theories have been developed to explain the behaviour of acids and bases. The most notable theories include the Arrhenius concept, the Brønsted-Lowry theory, and the Lewis concept.

(PhysOrg.com) -- Molecular oligoacceptors (chelating Lewis acids) are interesting compounds that are potentially applicable in phase-transfer processes, catalysis, or molecular recognition.

To reliably control the crystallization process during the fabrication of perovskites for photovoltaics, Fu, Sun and their colleagues used organic salts that contained Lewis acids. These salts ...

Could Martin improve on the Lewis acid that Stone developed ~60 years ago? Although it has been attempted before, no one has significantly improved on the process. Lewis acids are an essential ...

Brønsted acids release one or more of their protons (hydrogen ions), which combine with water molecules. Lewis acids extract one or more hydroxyl ions from water to release hydrogen ions, which, again ...

Seeking new paradigms to enhance the anion affinities of such systems, we synthesized a bidentate Lewis acid that contains a boryl and a telluronium moiety as Lewis acidic sites. Anion ...

Figure 1: BF 3 ·OEt 2 catalyses the formation of 2-phenyl-1,3,2-benzodioxaborole (3) from phenylboronic acid (1) and catechol acetonide (2). Figure 2: Lewis acid-catalysed boronate ester ...

"Lewis acids" are compounds that add electron pairs. Because of this ability, they are often used to speed up chemical reactions. Lewis superacids are stronger than antimony pentafluoride -- the ...

The second molecule, antimony pentafluoride (SbF 5), was first reported in 1904. This strong Lewis acid is nasty: It reacts violently with water, attacks the skin and eyes, and corrodes metals. Its ...