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Figure 3 Scheme of π-π-interactions in 1. For the sake of clarity only the {Ni(dpya)} structural units are shown without hydrogen atoms. Symmetry codes: i: − x, 0.5 + y, 0.5 − z; ii: − x, −0.5 + y, 0.5 − z; iii: −x, 1 − y, 1 − z; iv: x, 1.5 − y, 0.5 + z. |