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Figure 1 Coordination environment around the K ions in the title compound with the atom numbering scheme. Displacement ellipsoids are drawn at the 50% probability level. H atoms are presented as small spheres of arbitrary radius. [symmetry code: (A) −x − 1, −y − 1, −z; (B) −x, −y − , −z + ; (C) −x, y + , −z + ; (D) x − 1, −y − , z − ; (E) x − 1, −y − , z − ] |