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Figure 1
(Top) A view of a fragment of compound (1). Solid coloured atoms represent the asymmetric unit. The FeIII atoms (Fe2 and Fe3) are shown in yellow and the FeII atom (Fe1) is orange. Oxygen, carbon, nitro­gen and hydrogen atoms are displayed in red, black, blue and lime, respectively. (Bottom) A view along the b axis of the unit cell of compound (1), together with the magnetic moments of the FeII and FeIII sites (green and blue arrows, respectively) determined at 2 K from neutron diffraction (Cañadillas-Delgado et al., 2012BB4). [Symmetry codes: (a) [y + {1 \over 3}, x - {1 \over 3}, -z + {1 \over 6}]; (b) -y + 1, x - y, z; (c) -x + y + 1, -x + 1, z; (d) [x + {1 \over 3}, x - y - {1 \over 3}, z + {1 \over 6}]; (e) [-x + y + {4 \over 3}, y + {2 \over 3}, z + {1 \over 6}]; (f) [-y + {1 \over 3},] [-x + {2 \over 3}, z + {1 \over 6}]; (g) -y, x - y, z; (h) -x + y, -x, z; (i) -x, -y, -z; (j) y, -x + y, -z; (k) x - y, x, -z.]

IUCrJ
Volume 7| Part 5| September 2020| Pages 803-813
ISSN: 2052-2525
https://doi.org/10.1107/S205225252000737X