Bipolaron

In organic chemistry, it is a molecule or a part of a macromolecular chain containing two positive charges in a conjugated system.

[1] In organic chemistry, a bipolaron is a molecule or part of a macromolecular chain containing two positive charges in a conjugated system.

It is possible to synthesize and isolate bipolaron model compounds for X-ray diffraction studies.

[2] The diamagnetic bis(triaryl)amine dication 2 in scheme 1 is prepared from the neutral precursor 1 in dichloromethane by reaction with 4 equivalents of antimony pentachloride.

On the other hand, when a thiophene unit is added to the core in the structure depicted in scheme 2, these bond lengths are identical (around 138 pm) making it a true hybrid.