Crystal structure analysis of twisted cucurbit [14]uril conformations

Abstract In the present work, twisted cucurbit [14]urils were complexed with Dy 3 + cations in the presence of [CdCl 4 ] 2 − anions (compound 1 ) or with 1,12-dodecanedipyridyl (compound 2 ). Crystal structures were determined for the resultant Dy 3 + -bound and metal-free twisted cucurbit [14]uril complexes, and their conformations were found to be comparable.