Table 13.
ACA values of pyridines and 4-aminopyridines, ordered by increasing ACA values.
| system | ACA [kJ/mol] | system | ACA [kJ/mol] |
| pyridine (1) | +156.1 |
 (358) |
+164.7 |
 (359) |
+175.0 |
 (360) |
+182.4 |
 (361) |
+183.8 |
 (362) |
+183.5 |
 (363) |
+184.1 |
 (364) |
+206.4 |
 (365) |
+207.2 |
 (366) |
+210.7 |
 (367) |
+211.4 |
 (368) |
+211.5 |
 (54) |
+217.3 |
 (369) |
+219.4 |
 (370) |
+222.2 |
 (371) |
+222.8 |
 (372) |
+223.0 |
 (373) |
+223.2 |
 (56) |
+223.7 |
 (374) |
+223.9a |
 (375) |
+224.0a |
 (376) |
+224.2a |
 (377) |
+224.6a |
 (378) |
+227.8 |
 (379) |
+230.0 |
 (380) |
+236.6 |
 (57) |
+238.3 |
 (381) |
+238.5 |
 (382) |
+239.1 | ||
aThe conformational space used is based on the minima found for system 370 and elongation of alkyl groups using all-trans conformations.