anionotropy

noun

an·​ion·​ot·​ro·​py ˌan-ˌī-ə-ˈnä-trə-pē 

plural anionotropies

: tautomerism involving migration of an anion (as chloride, hydroxyl, or acetate) of which the best-known type is allylic rearrangement compare cationotropy, prototropy

anionotropic

-nə-ˈträp-ik  -ˈtrō-pik 

adjective