A novel [2]rotaxane was synthesized when an aniline-bearing [2]pseudorotaxa
ne-generated by the hydrogen bond-driven threading of a dibenzylammonium fi
lament through the cavity of the macrocyclic polyether dibenzo[24]crown-8-w
as stoppered via reaction with a bulky isocyanate. Complete characterizatio
n of the [2]rotaxane was accomplished by NMR spectroscopy, mass spectrometr
y and X-ray crystallography. (C) 1999 Elsevier Science Ltd. All rights rese
rved.