Acidity scale for strong Bronsted acids referred to their complexes with water and in the Gaseous phase

1976 ◽  
Vol 42 (3) ◽  
pp. 213-222 ◽  
Author(s):  
Michel Fournier ◽  
Antoine Potier ◽  
Marcel Allavena
Keyword(s):  
Gaseous Phase ◽  
Bronsted Acids ◽  
Acidity Scale

A Comprehensive Self-Consistent Spectrophotometric Acidity Scale of Neutral Brønsted Acids in Acetonitrile

2006 ◽  
Vol 71 (7) ◽  
pp. 2829-2838 ◽  
Author(s):  
Agnes Kütt ◽  
Ivo Leito ◽  
Ivari Kaljurand ◽  
Lilli Sooväli ◽  
Vladislav M. Vlasov ◽  
...  
Keyword(s):  
Bronsted Acids ◽  
Self Consistent ◽  
Acidity Scale

Spectrophotometric Acidity Scale of Strong Neutral Brønsted Acids in Acetonitrile

1998 ◽  
Vol 63 (22) ◽  
pp. 7868-7874 ◽  
Author(s):  
Ivo Leito ◽  
Ivari Kaljurand ◽  
Ilmar A. Koppel ◽  
Lev M. Yagupolskii ◽  
Vladislav M. Vlasov
Keyword(s):  
Bronsted Acids ◽  
Acidity Scale

An Acidity Scale for Brönsted Acids Including H3PW12O40

1997 ◽  
Vol 119 (33) ◽  
pp. 7702-7710 ◽  
Author(s):  
Russell S. Drago ◽  
José A. Dias ◽  
Thomas O. Maier
Keyword(s):  
Bronsted Acids ◽  
Acidity Scale

One-Pot Synthesis and Conformational Analysis of 6-Membered Cyclic Iodonium Salts

2020 ◽  
Author(s):  
Lucien Caspers ◽  
Julian Spils ◽  
Mattis Damrath ◽  
Enno Lork ◽  
Boris Nachtsheim
Keyword(s):  
Conformational Analysis ◽  
Bronsted Acids ◽  
One Pot ◽  
Benzyl Alcohols ◽  
Iodonium Salts ◽  
Efficient Approach ◽  
One Pot Synthesis ◽  
Diaryliodonium Salts

In this article we describe an efficient approach for the synthesis of cyclic diaryliodonium salts. The method is based on benzyl alcohols as starting materials and consists of an Friedel-Crafts-arylation/oxidation sequence. Besides a deep optimization, particluar focusing on the choice and ratios of the utilized Bronsted-acids and oxidants, we explore the substrate scope of this transformation. We also discuss an interesting isomerism of cyclic iodonium salts substituted with aliphatic substituents at the bridge head carbon. <br>

Intercalation of uranium hexafluoride into graphite

1985 ◽  
Vol 50 (4) ◽  
pp. 947-955 ◽  
Author(s):  
Karel Klouda ◽  
Václav Rak ◽  
Josef Vachuška
Keyword(s):  
Carbon Atom ◽  
Surface Area ◽  
Gaseous Phase ◽  
Uranium Hexafluoride ◽  
Graphite Particles ◽  
Fluorination Agent ◽  
Increasing Temperature ◽  
Elementary Fluorine

Intercalation of UF6 into graphite, both from the gaseous phase and from the Ledon 113 solution, was studied. The amount of intercalated UF6 from the gaseous phase was found to be inversely proportional to the size of graphite particles. Intercalation increases with the increasing temperature and surface area of graphite. The contact of gaseous UF6 with graphite led to the formation of β-UF5 that is not intercalated. In the Ledon solution, β-UF5 is not formed. "Passivation" of graphite by elementary fluorine also prevents the formation of β-UF5 but the amount of intercalated UF6 decreases. The intercalation of UF6 into graphite from the gaseous phase is accompanied by the increase of the distance between the parallel carbon atom layers up to the values of about 884 pm. Ternary intercalates graphite-UF6-Ledon 113 are formed during the intercalation of UF6 from the Ledon 113 solutions and the distance between the parallel carbon atom layers is 848-875 pm. Thermogravimetry in the presence of air revealed that the binary intercalates graphite-UF6 decompose in a 3-step reaction while the ternary intercalates decompose in a 4-step reaction. In both cases uranium hexafluoride is not released but acts as a fluorination agent on the graphite carbon.

Sign in / Sign up

Export Citation Format

Share Document