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Figure 2 Ball-and-stick model of the coordination sphere of the potassium ion; with exception of the hydrogen atoms, which are shown as spheres of arbitrary radius, all other atoms are represented as displacement ellipsoids at the 70% probability level; covalent bonds of H2O are indicated as thick sticks (orange), strong/weak electrostatic interactions (yellow) as thick unbroken/broken ones. [Symmetry codes: (1) − x, 1 − y, + z; (2) − + x, y, − z; (3) 2 − x, + y, 1 − z; (4) 2 − x, 1 − y, 1 − z.] |