title: [2]Pseudorotaxane composed of heteroditopic macrobicycle and pyridine N-oxide based axle: recognition site dependent axle orientation.
abstract: A strategy for threading an axle having a hydrogen bond acceptor unit in the cavity of a C3v symmetric amido-amine macrobicycle is investigated. The macrobicycle acts as a wheel in its neutral as well as triprotonated states to form threaded architectures with a pyridine N-oxide derivative. The negative oxygen dipole of the axle is capable of [2]pseudorotaxane formation in two different orientations with the wheel in its neutral and triprotonated states.
authors.forename: Subrata
authors.initials: S
authors.lastname: Saha
authors.forename: Saikat
authors.initials: S
authors.lastname: Santra
authors.forename: Pradyut
authors.initials: P
authors.lastname: Ghosh