Wii. Bakker et al., KINETICALLY STABLE SILVER COMPLEXES OF CALIXSPHERANDS, Journal of the Chemical Society, Chemical Communications, (1), 1994, pp. 71-72
Calixspherands 1 and 2 form kinetically stable complexes with Ag+, in
CDCl3 saturated with D2O, with half-lives of decomplexation of 51 and
131 h, respectively.