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Figure 6
Structure of DH-I. The view along the b axis (a) is along the direction of propagation of the polymeric ribbon. The view along the c axis (b) shows one square-shaped Na+–(μ-OH2)2–Na+ unit and the square-pyramidal coordination geometry of Na+.

IUCrJ
Volume 1| Part 5| August 2014| Pages 328-337
ISSN: 2052-2525
doi:10.1107/S2052252514015450