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Figure 1 Molecular structure of the title compound, showing the atom labelling scheme for the asymmetric unit and extended to show the coordination geometry for the K+ cation. Displacement ellipsoids are drawn at the 50% probability level and H atoms are represented as small spheres of arbitrary radii (i) −x+1/2, y-1/2, −z+3/2; (ii) −x+1, y, −z+3/2; (iii) −x+1/2, y+1/2, −z+3/2. |