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. Author manuscript; available in PMC: 2019 Jan 11.
Published in final edited form as: Chem. 2017 Dec 14;4(1):46–93. doi: 10.1016/j.chempr.2017.10.015

Figure 31. Illustrative structures of the complexes and variable concentration 1H NMR spectra.

Figure 31

(A) The crystal structure of the 2 : 2 : 2 complex (69 : HSO4− : TBA+).

(B) The energy minimized structure of the 3 : 2 complex (69 : HSO4−).

(C) The variable concentration 1H NMR spectra of 69 (60 : 40 v/v % CD2Cl2/CD3CN) as recorded in the presence of 1 equivalent of NBu4HSO4. Here CS refers to 69.

Taken from Fatila et al.97 and reproduced with permission. © 2017 Wiley-VCH Verlag GmbH & Co. KGaA.