Bl. Poh et al., H-1-NMR AND VISIBLE SPECTROSCOPIC STUDIES ON THE COMPLEXATION OF PARAQUAT DICATION WITH CYCLOTETRACHROMOTROPYLENE IN WATER, Tetrahedron, 49(18), 1993, pp. 3849-3856
Cyclotetrachromotropylene forms a 1:1 complex with paraquat dication i
n water. The stability constant of the complex is 1.1x10(7) M-1 at 25-
degrees-C.