A Cucurbit[8]uril 2:2 Complex with a Negative pK(a) Shift

Hang Yin, Qian Cheng, Roselyne Rosas, Stephane Viel, Valerie Monnier, Laurence Charles, Didier Siri, Didier Gigmes, Olivier Ouari, Ruibing Wang, Anthony Kermagoret, David Bardelang,
Chemistry-a European Journal, 25 12552-12559 (2019)