Al. Balch et al., SOLID-STATE SELF-ASSOCIATION OF THE 2-ELECTRON OXIDATION-PRODUCT OF ABILIVERDIN ANALOG, Journal of the Chemical Society, Chemical Communications, (6), 1995, pp. 643-644
Oxidation of octaethylbilindione with one molar,equivalent of iodine p
roduces an open-chain tetraaza cation [2(+)] which self-associates in
the solid state through a set of hydrogen bonds to form a dimeric enti
ty that consists of two interpenetrating C-shaped units.