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J. Chem. Soc., Chem. Commun., 1987, 1058 - 1061, DOI: 10.1039/C39870001058
Complexation of Paraquat and Diquat by a bismetaphenylene-32-crown-10 derivative
Billy L. Allwood, Hooshang Shahriari-Zavareh, J. Fraser Stoddart and David J. Williams
U.v. and 1H n.m.r. spectroscopic studies in solution on the 1:1 complexes both [Paraquat][PF6]2 and [Diquat][PF6]2 form with the bismetaphenylene-32-crown-10 derivative (BMP32C10), supported by X-ray crystal structures on the free BMP32C10 and [Diquat·BMP32C10][PF6]2·Me2CO, provide further fundamental understanding of the electronic and steric nature of the intermolecular noncovalent interactions that are essential to the successful design and synthesis of a molecular receptor for optimal binding of the [Paraquat]2+ dication.
