Aryl Phosphate Complexation by
Cationic Cyclodextrins. An Enthalpic
Advantage for Guanidinium over
Ammonium and Unusual
Enthalpy−Entropy Compensation
Steven L. Hauser
Eric W. Johanson
Heather P. Green
Paul J. Smith
10.1021/ol006503r.s001
https://acs.figshare.com/articles/journal_contribution/Aryl_Phosphate_Complexation_by_Cationic_Cyclodextrins_An_Enthalpic_Advantage_for_Guanidinium_over_Ammonium_and_Unusual_Enthalpy_Entropy_Compensation/3737244
The enthalpies and entropies for phosphate complexation by ammonium and guanidinium groups have been compared using cationic
cyclodextrins. Aryl phosphate binding by guanidinium hosts is associated with more favorable enthalpies and less favorable entropies, consistent
with the idea that guanidinium−phosphate interactions are stronger but more directional than ammonium−phosphate interactions. The slope
of an enthalpy−entropy plot suggests that complexation occurs with surprisingly small changes in the order of these systems.
2000-10-27 00:00:00
ammonium
Cationic Cyclodextrins
Enthalpic Advantage
Aryl Phosphate Complexation
guanidinium hosts
enthalpie
guanidinium groups
phosphate complexation
entropie
interaction
Aryl phosphate binding
cationic cyclodextrins