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. Author manuscript; available in PMC: 2009 Jan 27.
Published in final edited form as: J Org Chem. 2007 Mar 6;72(7):2469–2475. doi: 10.1021/jo062526t

Table 2.

The Effect of the Number of Fluorine Atoms of Ar2 on ΔH and ΔS for Arene-Arene Interactions in CDCl3. The standard errors are calculated using linear regression analysis.27

Entry Compound Ar1 Ar2 ΔH° anti→syn,a ΔS°anti→synb ΔGanti→sync
1 6a C6H4NMe2 C6F5 −1.84 ± 0.2 −2.9 ± 0.8 −0.99 ± 0.2
2 6b C6H4NMe2 C6HF4 −1.41 ± 0.1 −3.4 ± 0.3 −0.41 ± 0.1
3 6c C6H4NMe2 C6H2F3 −0.53 ± 0.1 −2.4 ± 0.3 −0.17 ± 0.1
4 6d C6H4NMe2 C6H3F2 −0.08 ± 0.1 −2.4 ± 0.2 0.62 ± 0.1
5 6e C6H4NMe2 C6H4F 0.46 ± 0.1 −0.9 ± 0.5 0.72 ± 0.1
a

in units of kcal/mol.

b

in units of cal/mol·K.

c

in units of kcal/mol at 293 K.