Figure 1
From: Candidate Quantum Spin Liquid due to Dimensional Reduction of a Two-Dimensional Honeycomb Lattice

A schematic of four magnetic configuration of honeycomb lattice: (a) the ferromagnetic state, (b) the Néel antiferromagnetic state, (c) the stripy antiferromagnetic state, (d) the zigzag antiferromagnetic state and (e) arrangement of anionic layer on the ab plane at 290 K.
Color code: Cu, blue; C, grey; O, red. White solid lines: Cu–O, C–C, C–O bond.