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. Author manuscript; available in PMC: 2019 Jun 12.
Published in final edited form as: J Am Chem Soc. 2018 Nov 28;140(49):17071–17078. doi: 10.1021/jacs.8b08704

Figure 1.

Figure 1.

X-ray crystal structures of [Ba(Hmacropa)(DMF)]ClO4•Et2O (a,b), [Ba(Hmacropaquin)(DMF)]ClO4•DMF (c,d), and [Ba(H2macroquin–SO3)(H2O)]•4H2O (e,f). Ellipsoids are drawn at the 50% probability level. Counteranions, non-acidic hydrogen atoms, and outer-sphere solvent molecules are omitted for clarity.