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    Bonding, Ion Mobility, and Rate-Limiting Steps in Deintercalation Reactions with ThCr<sub>2</sub>Si<sub>2</sub>-type KNi<sub>2</sub>Se<sub>2</sub> by James R. Neilson (1896145)

    Published 2012
    “…Furthermore, the fully oxidized compounds, K<sub>0.25</sub>Ni<sub>1.5</sub>Se<sub>2</sub>, spontaneously convert from the tetrahedral [NiSe<sub>4</sub>]-containing ThCr<sub>2</sub>Si<sub>2</sub> structure to a vacancy-ordered NiAs structure with [NiSe<sub>6</sub>] octahedra. …”