Spectroscopic work on eight-ring oligoanilines, namely emeraldine, nigraniline, and pernigraniline, has been performed. Infrared spectra are obtained with and without iodine to study the effect of complexation with iodine. Spectra of these even-numbered systems show Kuhn periodicity (paired rings). The number of Gaussian curves shows the delocalized charge between two or more consecutive rings. Thus, emeraldine shows three Gaussian curves. As the quinonoid resonance is established, it electronically shorts two neighboring rings. This leads to two Gaussian curves in nigraniline and one Gaussian curve in pernigraniline. Thus, the quinonoid resonance suppresses Kuhn periodicity and establishes long-range order.