Coordination of Bimuth(III) to Cucurbit[8]uril. Preparation and X‐ray Structure of [{Bi(NO3)(H2O)5}2(Q8)][Bi(NO3)3(H2O)4]2[Bi(NO3)5]2·Q8·19H2O

Bi(NO3)3 reacts with cucurbit[8]uril, (Q8), in 3M HNO3 to give the title complex whose structure includes three discrete Bi complexes: [{Bi(NO3)(H2O)5}2(Q8)]4+ (CN of Bi = 9, both NO3— and cucurbit[8]uril are bidentate), [Bi(NO3)5]2— (CN of Bi = 10, all NO3— are bidentate), and [Bi(NO3)3(H2O)4] (CN of Bi = 10, all NO3— are bidentate).