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. Author manuscript; available in PMC: 2017 May 4.
Published in final edited form as: Dalton Trans. 2016 May 4;45(18):7672–7677. doi: 10.1039/c6dt00604c

Fig. 5.

Fig. 5

a. Comparison of end-of-reaction 11B NMR spectra under representative conditions. Top: AB dehydrogenation catalysed by 10% Ru atom of 1 after 1.75 hours in 2:1 diglyme/benzene-d6 at 70°C. Bottom: AB dehydrogenation catalysed by 10% Ru atom of 3 after 1.75 hours in 2:1 diglyme/benzene-d6 at 70°C. Note the larger proportion of polyborazylene in the top spectra (24–34 ppm) compared to the bottom spectra. Boron standard (BF3-OEt2 inset tube) is at 0 ppm. Areas under the peaks are integrated relative to the external standard BF3-OEt2 peak set to 1.00. b. Peak height of borazine over time catalysed by 10% Ru atom of 1 (left) and 3 (right).