Effects of alkyl groups on acidities and basicities in the gas phase. An ab initio molecular orbital study

1975 ◽  
Vol 28 (1) ◽  
pp. 1 ◽  
Author(s):  
L Radom
Keyword(s):  
Ab Initio ◽  
Gas Phase ◽  
Molecular Orbital ◽  
Molecular Orbital Theory ◽  
Orbital Theory ◽  
On Demand ◽  
Charge Distributions ◽  
Molecular Orbital Study ◽  
Orbital Study ◽  
Alkyl Groups

Ab initio molecular orbital theory has been used to investigate the acidities and basicities of alcohols (ROH), alkylamines (RNH2) and alkynes (RCCH) (R = Me, Et, isopropyl, t-butyl). In all cases, the acidities and basicities increase in the order R = Me < Et < Pri < But. Analysis of the calculated charge distributions shows that alkyl groups can donate or accept electrons on demand and that the larger alkyl groups examined do this more effectively than the smaller ones.

The Role of Ylides in the Chlorination of Unsymmetrical Sulfides: An Ab Initio Molecular Orbital Study

2005 ◽  
Vol 58 (2) ◽  
pp. 143
Author(s):  
Michael Potvin ◽  
Belquis Mothana ◽  
Laura Albrecht ◽  
Katherine Valenta Darvesh ◽  
Richard F. Langler
Keyword(s):  
Ab Initio ◽  
Molecular Orbital ◽  
Molecular Orbital Theory ◽  
Orbital Theory ◽  
Organic Sulfides ◽  
Molecular Orbital Study ◽  
Orbital Study

Ab initio molecular orbital theory has been used to investigate a series of possible chlorosulfonium ylides to assess the potential for ylide intermediacy in the chlorination of organic sulfides. The majority of optimized structures are best viewed as thionium salts. Only ylide structures in which the putative carbanionic centre bears a powerful anion stabilizer (e.g. cyano or carbomethoxy) survive optimization.

Rotation about the C—N bond in formamide: an ab initio molecular orbital study of structure and energetics in the gas phase and in solution

1993 ◽  
Vol 89 (15) ◽  
pp. 2631-2635 ◽  
Author(s):  
Neil A. Burton ◽  
Shirley S-L. Chiu ◽  
Mark M. Davidson ◽  
Darren V. S. Green ◽  
Ian H. Hillier ◽  
...  
Keyword(s):  
Ab Initio ◽  
Gas Phase ◽  
Molecular Orbital ◽  
Molecular Orbital Study ◽  
Orbital Study
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