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We have synthesized three simple and versatile terphenyl crowns (TC) receptors containing ethereal canopies that direct a potassium cation for efficient cation-pi interactions as established by 1H NMR spectroscopy and by isolation and X-ray crystallography of their K+ salts.

chemical communications

Terphenyl crowns: a new family of receptors containing ethereal canopies that direct potassium cation onto benzenoid platforms for cation–π interactions