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Figure 4
Diagrams showing the quaternary ammonium groups on opposite sides of the layer in (a) 2 ([100] direction) and (b) 3 ([101] direction). Tetranuclear Cu4(OH)2 units are shown as green polyhedra and CuBr3 units are shown as blue triangles. Colour code: Br purple, C gray, H light gray, N blue, O red and Zn cyan polyhedra. |