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Figure 3 View down the c axis, showing the sodium ions, lying in a sheet parallel to (001), with all their coordinated atoms linked by bridging sulfonate groups. Symmetry codes: (i) x − , −y + , −z + 1; (iv) x − , −y + , −z + 1; (viii) x, y − 1, z; (x) x, y + 1, z. |