Catenane Formation from Two Molecular Rings through Very Rapid Slippage. A Möbius Strip Mechanism

Supramolecular Coordination: Self-Assembly of Finite Two- and Three-Dimensional Ensembles

“…32,33 The Pt analogue of 1 has led to the formation of a stable interpenetrating [2]catenane, owing to the higher strength of the Pt-N. 34 Batten et al 35 have demonstrated that the formation of a [2]catenane is also dependent on the length of the bridging ligand. The assembly of 90° cis -blocked [Pd(dppp)(OTf) 2 ] (dppp = diphenylphosphinopropane) 4 with ditopic ligands 5 , containing two 4-(4-pyridyl)pyrazolyl arms that are connected by ethane and propane bridges, led to the formation of [2]catenane 6 and molecular rhomboid 7 , respectively (Scheme 3).…”

Self-Assembly of Discrete Cyclic Nanostructures Mediated by Transition Metals

“…Isolation and crystallization of catenane 20 allowed the confirmation of its structure by X-ray crystallographic analysis. 39, 40 The self-assembly of molecular rectangles may be accomplished by using organic angular subunits with a modified shape but similar electronic properties. 41 Two types of rectangles were constructed by Fujita and co-workers.…”

A New Motif for the Self-Assembly of [2]Pseudorotaxanes; 1,2-Bis(pyridinium)ethane Axles and [24]Crown-8 Ether Wheels

“…Among these are the complexes of type 1 with X Cl [8] and F, [9] which correspond to the structure motif A with pyramidal nitride functionality, and the nitride (C ± O 2.36 ± 2.66 ), and 3) p-stacking interactions between the electron-rich catechol rings of the crown ether and the electron-poor aromatic rings and ester group of the pyridinium salt.…”