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Structures of Cu-OMG zeolites, Cu/O2 (450 °C), and Cu/CH4 (200 °C). (top)\ Coordination of the Cu(1)2+ ions in a 6-ring of a gme cavity showing the difference between an occupied (front) and an unoccupied (back) 6-ring. (bottom) Coordination geometries of Cu(2) and Cu(3) before and after the introduction of CH4. Reproduced with permission from ref (356). Copyright 2021 John Wiley and Sons.
