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. Author manuscript; available in PMC: 2012 Apr 22.
Published in final edited form as: J Phys Chem B. 2010 Aug 12;114(31):9947–9955. doi: 10.1021/jp101347q

Figure 1.

Figure 1

(A) Results of titrimetry with hydrochloric acid with markers representing the levels of molar ratio additions used in the 1H NMR study. (B) Typical 1H NMR spectra of partially and fully dissociated complex (singlet at 6.65ppm from complex, multiplet centred at 6.85 from dissociated 1,2 dihydroxybenzene). X:Y represents the mole ratios of Si:H+. (C) Plot of residual complex for samples treated with increasing amounts of acid. (D) Acid dissociation of silicon catecholate complex precluding the formation of partially hydrolysed species in the time frame of the NMR experiment.