In contrast to structural parameters extracted from X-ray diffraction experiments, CC coupling constants (JCC) prove to be reliable and sensitive probes of α-C-C agostic character.
![C-C coupling constants, JCC, are reliable probes for alpha-C-C agostic structures](https://www.iciq.org/wp-content/uploads/2014/03/C-C-coupling-constants_940.gif)
In contrast to structural parameters extracted from X-ray diffraction experiments, CC coupling constants (JCC) prove to be reliable and sensitive probes of α-C-C agostic character.