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. Author manuscript; available in PMC: 2012 Dec 26.
Published in final edited form as: Org Biomol Chem. 2010 Sep 6;8(23):5431–5441. doi: 10.1039/c0ob00482k

Fig. 7.

Fig. 7

Absorption spectra of (A) 2a (2.9 μM) in CH3 CN upon addition of ZnCl2 (0–26 μM) and (B) 2b (1.9 μM) in CH3 CN upon addition of ZnCl2 (0–14 μM). The spectra that were collected at the beginning and the end of a titration experiment are coded blue and red, respectively.