From Encapsulation to Polypseudorotaxane: Unusual Anion Networks Driven by Predesigned Metal Bis(terpyridine) Complex Cations

Solvothermal reactions of CuSCN, metal (Mn2+, Fe2+, Co2+, Ni2+,
Cu2+) sulfate, and terpyridine (2,2‘:6‘,2‘ ‘-terpyridine or 4‘-p-tolyl-2,2‘:6‘,2‘ ‘-terpyridine) in the presence of triphenylphosphine yielded
a series of hybrid coordination compounds, in which in situ formed
metal bis(terpyridine) complex cations are encapsulated by a 3D
anionic network or entangled by 2D heartlike networks, forming
encapsulation or polypseudorotaxane supramolecules. The complex
cations play a role as template to direct the fabrication of the
structures.