Abstract:
Halogen bonding represents an interesting form of intermolecular attraction that has recently
been recognized as a useful tool in preparation of certain materials and molecular recognition in
some chemical and biochemical systems. Halogen bonding is formed between a halogen and an
electron rich species on another molecule. Strong halogen bonding specifically was studied in
this experiment. The strong halogen bonding’s thermodynamic properties, such as equilibrium
constants and extinction coefficients, are currently understudied and not well known. Knowledge
of these numbers will improve their ability to be used for preparation of materials and their use
in molecular recognition in other fields of study. Using Uv-Vis spectroscopy, a wide variety of
halogen bond donors and halogen bond acceptors were studied. The acceptors studied were
Bromide, Chloride and Iodide anions. And the halogen bond donors studied were halogen
containing imides and saccharines. This study found that strong halogen bonding is between 3-
1000 times stronger than typical halogen bonding from determining the equilibrium constants
and extinction coefficients of various saccharines and imide systems.
