Abstract
Hydroquinone reacts with p-benzoquinone to form a charge transfer (CT) complex, so called, quinhydron. dimeric and trimeric benzoquinones and were synthesized, into which t-butyl and n-dodecyl substituents were introduced in order to enhance their solubility. In this paper, formation of quinhydrone-type complexes between oligomeric quinines and the corresponding hydroquinones was examined.
When quinine with t-butyl substituents was mixed with hydroquinone, neither in solution nor in solid were yielded quinhydron-type complex. This is probably due to sterically bulky t-butyl substituent (vide infra).
When quinine with n-dodecyl substituents was ground with hydroquinone in solid, the mixture immediately turn into deep purple.
Their different behavior should be ascribed to the bulkiness of their substituents. The spectral properties of the CT complexes will be reported in detail.
