Fig. 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.
