SEARCH Articles Figures Tables Corner-protonated cyclopropan Cyclopropane comer-protonated Cyclopropane corner protonated Cyclopropane edge protonated Cyclopropane face-protonated Cyclopropane proton affinity Cyclopropane protonated Cyclopropane protonated Cyclopropane protonated intermediates Protonated Cyclopropane Isomerization Protonated cyclopropane Chemistry Protonated cyclopropane Inversion Protonated cyclopropane from amines Protonated cyclopropane from esters Protonated cyclopropane isomers Protonated cyclopropane relative energies