Table 2: Summary of dipole moments and release data.

AnionEquilibrium isomer released at 40°C (%)Dipole momentCalculated charges
CarbonOxygen 1Oxygen 2

o-HCn10013.7 D+0.036−0.460−0.455
m-HCn4014.9 D−0.003−0.431−0.457
p-HCn2216.7 D−0.005−0.461−0.434