Ribeiro et. al. have studied the separation of molecules with this property from molecules without it using pervaporation through polyimide membranes. In those experiments, the permeability of molecules with this property is increased by addition of hexafluoropropane moieties to the membrane. Vollhardt synthesized a derivative of one molecule of this type where each hydrogen is replaced with a ferrocene group; that molecule allowed studies of how this property is impacted by (*) bond strain. This property is observed in the reduced form of Coenzyme Q but not the oxidized form. Ulusoy and Nest observed partial charges on neighboring atoms after  using lasers to temporarily remove this property from molecules,  In H-NMR, hydrogens associated with this property show chemical shifts of about 6-8 ppm due to a characteristic downfield shift. This property is destroyed using sodium metal, ammonia, and an alcohol in a reaction that produces a cyclic diene. For 10 points, molecules with which property are functionalize
Ribeiro et. al. have studied the separation of molecules with this property from molecules without it using pervaporation through polyimide membranes. In those experiments, the permeability of molecules with this property is increased by addition of hexafluoropropane moieties to the membrane. Vollhardt synthesized a derivative of one molecule of this type where each hydrogen is replaced with a ferrocene group; that molecule allowed studies of how this property is impacted by (*) bond strain. This property is observed in the reduced form of Coenzyme Q but not the oxidized form. Ulusoy and Nest observed partial charges on neighboring atoms after  using lasers to temporarily remove this property from molecules,  In H-NMR, hydrogens associated with this property show chemical shifts of about 6-8 ppm due to a characteristic downfield shift. This property is destroyed using sodium metal, ammonia, and an alcohol in a reaction that produces a cyclic diene. For 10 points, molecules with which property are functionalized in Lewis Acid-catalyzed alklyation and acylation reactions named after Friedel and Crafts?
Ribeiro et. al. have studied the separation of molecules with this property from molecules without it using pervaporation through polyimide membranes.
aromaticity [accept word forms]