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Figure 14
Stacks of non-aromatic rings. (a) Hydrogen chloranilate anions in KHCA·2H2O (Molčanov et al., 2009bBB62), (b) chloranilate dianions in Na2CA·2H2O (Molčanov et al., 2009aBB61), (c) [Cu(CA)(2,2′-bpy)] (Molčanov et al., 2013aBB55), (d) pancake-bonded dimers of tetra­chloro­semi­quinone radical anions in triclinic N-MePy·Cl4Q (Molčanov et al., 2016BB68), (e) equidistant tetra­chloro­semi­quinone radical anions in orthorhombic N-MePy·Cl4Q (Molčanov et al., 2016BB68) and (f) triplets of partially charged tetra­chloro­semi­quinone radicals in (4-damp)2(Cl4Q)3 (Molčanov et al., 2018aBB64). Stacks (a), (b) and (c) comprise closed-shell rings, while (d), (e) and (f) are radicals.

IUCrJ
Volume 6| Part 2| March 2019| Pages 156-166
ISSN: 2052-2525
https://doi.org/10.1107/S2052252519000186