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High‐Fidelity Multistate Switching with Anion–Anion and Acid–Anion Dimers of Organophosphates in Cyanostar Complexes
Author(s) -
Zhao Wei,
Qiao Bo,
Chen ChunHsing,
Flood Amar H.
Publication year - 2017
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201707869
Subject(s) - chemistry , ion , picric acid , hydroxide , base (topology) , photochemistry , inorganic chemistry , combinatorial chemistry , organic chemistry , mathematical analysis , mathematics
Abstract The acid–base switching of complexes formed from anti‐electrostatic anion–anion homodimers of organophosphates and cyanostar macrocycles was investigated for the first time. High‐fidelity 2:2 complexes were selected by using suitably sized organo substituents. Reversible and direct switching occurs with triflic acid and hydroxide base. An unexpected acid⋅⋅⋅anion heterodimer was discovered with weaker picric acid, which helped reveal some of the elementary steps. Switching can also proceed in a cooperative (strong anion then weak acid) or stepwise manner (weak acid then strong anion).