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Hard-soft-acid-base concept hydrogenation

The above classification is generally in agreement with Pearson s acid-base concept. Protic solvents are hard in nature, and they solvate small anions with strong hydrogen bonds, whereas dipolar aprotic solvents have a soft character, and they interact more strongly with the large, polarizable anions. [Pg.22]

The Lewis acid/base complex is formed via an overlap between a doubly occupied orbital of the donor D and vacant orbital of the acceptor A. This acid/base approach was extended by Pearson who divided Lewis acids and bases into two groups, hard and soft, according to their electronegativity and polarizability (principle of hard and soft acids and bases (HSAB concept). Hard acids (e.g., H, Lf, Na, BF3, AICI3, hydrogen-bond donors HX) and hard bases (e.g., F", CL, HO, RO, H2O, ROH, R2O,... [Pg.67]

See other pages where Hard-soft-acid-base concept hydrogenation is mentioned: [Pg.549]    [Pg.549]    [Pg.156]    [Pg.19]    [Pg.12]    [Pg.79]    [Pg.1199]    [Pg.8]    [Pg.235]    [Pg.362]    [Pg.12]   
See also in sourсe #XX -- [ Pg.162 ]



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Acid-base concepts

Hard acids

Hard bases

Hard-soft concept

Hard-soft, acid-bases

Hydrogen bases

Soft acids

Soft acids/bases

Soft bases

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