Diapositiva 1

1
Supramolecular dynamic porous networks resolve
mixtures of oligomeric a,?-diiodoperfluoroalkanes
in solution and through gas-solid reactions
Pierangelo Metrangolo, Giuseppe Resnati, Tullio
Pilati, Yvan Carcenac

• A new supramolecular approach to separate
  I-(CF2CF2)m-I mixtures (m1-6) is based on
• the programmed formation of dynamic and
  selective porous networks thanks to I?I-C
• halogen bonding
• the matching between the cation size and the
  supramolecular anion size

Rule of thumb bis-onium iodides with 2m6
methylene groups allow the separation of
a,?-diiodoperfluoroalkanes with m
difluoromethylene groups. For intsance,
tetradeca-, hexadeca-, and octadeca-bis-onium
iodides allowed the quantitative separation of
I-(CF2CF2)4-I, I-(CF2CF2)5-I, and I-(CF2CF2)6-I
in pure forms out of crude industrial mixtures.