Pl. Jones et al., A CYCLIC SUPRAMOLECULAR COMPLEX CONTAINING 8 METAL-IONS, 12 BRIDGING LIGANDS, AND AN ANION ENCAPSULATED IN THE CENTRAL CAVITY, Chemical communications, (15), 1997, pp. 1361-1362
Reaction of the bis-bidentate ligand bis(3-(2-pyridyl)pyrazol-1-yl)dih
ydroborate (L-) with cobalt(II) or nickel(II) salts results in formati
on of complexes [M8L12X]X-3 (X = ClO4, PF6), which have a cyclic struc
ture with one anion encapsulated in the central cavity.