Structure of cyclodextrins and their complexes. Part 5.1 The NMR observation of separate signals of host and guest pertaining to 1 : 1 and 1 : 2 complexes of acenaphthene with β-cyclodextrin

In addition to usual shifted signals pertaining to the 1 : 1 complex, separate signals of a 1 : 2 complex of acenaphthene with beta-cyclodextrin were observed in proton NMR spectra at low temperatures.