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. Author manuscript; available in PMC: 2019 Jan 16.
Published in final edited form as: RSC Adv. 2018 Jan 16;8(6):3024–3035. doi: 10.1039/c7ra09459k

Figure 1.

Figure 1

Molecular structure and numbering scheme for 6. The 6a species is positioned below 6b in this orientation. Thermal ellipsoids are drawn at 50% probability. The solvent molecules have been omitted for clarity.