Base Strengths of Alkylpyridines Using Triethylaluminum as the Reference Acid. A Study in F Strain

1963 ◽  
Vol 28 (6) ◽  
pp. 1554-1557 ◽  
Author(s):  
Donald F. Hoeg ◽  
Samuel Liebman ◽  
Leo Schubert
Keyword(s):  
Reference Acid

Dimethylboric anhydride: a convenient preparation and full characterization

1969 ◽  
Vol 47 (4) ◽  
pp. 569-575 ◽  
Author(s):  
G. F. Lanthier ◽  
W. A. G. Graham
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Complex Formation ◽  
Lewis Acid ◽  
Complete Characterization ◽  
Full Characterization ◽  
Hydrolysis Of ◽  
Convenient Preparation ◽  
Reference Acid ◽  
Acid Character

Dimethylboric anhydride, (CH3)2BOB(CH3)2, has been prepared by limited hydrolysis of dimethylboron chloride and complete characterization has been carried out. The Lewis acid character of boron and the donor strength of oxygen have been studied using tensimetric and nuclear magnetic resonance techniques.Evidence for boron–oxygen π-bonding obtained from complex formation studies, using trimethylboron as a reference acid, is presented and discussed. The reduced acidity of the boron atoms, in comparison with trimethylboron, is discussed in terms of boron–oxygen π-bonding.

scholarly journals The Determination of Hydrogen Basicities in Acetonitrile. p-Nitrobenzyl Triphenylphosphonium Perchlorate as Reference Acid.

1973 ◽  
Vol 27 ◽  
pp. 421-428 ◽  
Author(s):  
Olav Vikane ◽  
Jon Songstad ◽  
Berndt Sjöberg ◽  
Steinar Husebye ◽  
P. Klæboe ◽  
...  
Keyword(s):  
Reference Acid

Basicities of organometallic and other bases using the visible absorption maximum of the reference acid and its conjugate base

1970 ◽  
Vol 48 (23) ◽  
pp. 3769-3770 ◽  
Author(s):  
R. A. N. McLean ◽  
J. D. Umpleby
Keyword(s):  
Absorption Maximum ◽  
Quantitative Measure ◽  
Visible Absorption ◽  
Organic Bases ◽  
Reference Acid ◽  
Conjugate Base

The shift in the visible absorption maximum of hexanitrodiphenylamine has been used as a measure of the base strengths of some organometallic and organic bases. It is not possible to obtain a quantitative measure for stronger bases as the hexanitrodiphenylamine anion is produced. The order of base strengths for the organometallic bases studied is found to be Me3SiSMe < Me3CSMe < Me3SnSMe ≈ Me3SiNMe2.

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