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. Author manuscript; available in PMC: 2013 Dec 2.
Published in final edited form as: Acta Crystallogr C. 2011 Sep 29;67(0 10):10.1107/S0108270111035761. doi: 10.1107/S0108270111035761

Figure 2.

Figure 2

A single O—H⋯O-bonded helical chain in the crystal structure of (I), viewed along [100]. The two strands of the chain are denoted S and S’, with the hydrogen bonds α = O6—H6O⋯O7(x, y + 1, z) and β = O7—H7O⋯O6(−x + 2, y−12, z + 1).