SEARCH Articles Figures Tables 1,5-proton shift Chemical protons Chemical shift effect Chemical shift of protons Chemical shift proton Chemical shift protonation Chemical shifts substituent effects Effect of fluorination Effect of substituent Effects of chemical shifts Effects of substituents Effects on Chemical Shifts Fluorine substituent effects Fluorine, effect Fluorine-19 chemical shifts Of chemical shift Protonation shifts Shift effects Substituent chemical shift Substituent effects on chemical Substituent effects on chemical shifts Substituent effects shifts The Chemical Shift The Proton