ionotropy

noun
  1. chem the reversible interconversion of a pair of organic isomers as a result of the migration of an ionic part of the molecule
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012