WHAT ARE THE RELATIVE STERIC DEMANDS OF CARBOXYL AND METHYL-GROUPS

Authors
COLOMINA M TURRION C JIMENEZ P ROUX MV LIEBMAN JF
Citation
M. Colomina et al., WHAT ARE THE RELATIVE STERIC DEMANDS OF CARBOXYL AND METHYL-GROUPS, Structural chemistry, 5(2), 1994, pp. 141-143
Citations number
11
Categorie Soggetti
Chemistry
Journal title
Structural chemistry → ACNP
ISSN journal
10400400
Volume
5
Issue
2
Year of publication
1994
Pages
141 - 143
Database
ISI
SICI code
1040-0400(1994)5:2<141:WATRSD>2.0.ZU;2-X
Abstract
The relative steric demands of carboxyl and methyl groups are compared by contrasting the difference quantity delta = DELTAH(f)degrees(g, Ar COOH) - DELTAH(f)degrees(g, ArCH3) for a collection of alkylated benzo ic acids and toluenes with the value for Ar = C6H5, the arche-typical (i.e., unsubstituted) benzoic acid and toluene. We conclude that carbo xyl and methyl groups are nearly the same size.