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. Author manuscript; available in PMC: 2017 Mar 30.
Published in final edited form as: J Am Chem Soc. 2016 Mar 21;138(12):4243–4248. doi: 10.1021/jacs.6b01230

Figure 2.

Figure 2

X-ray diffraction crystal structure of 5 and core-atom structures of 5′, 6, and 8 with thermal ellipsoids drawn at 50% probability. Hydrogen atoms (excepting the N–H′s), the BArF24 counteranion of 5, the triflate counteranion of 6, and cocrystallized solvent molecules have been removed for clarity. Refer to the Supporting Information for complete crystallographic details.