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Figure 1
The mol­ecular structures of the constituents of (a) (I)[link] and (b) (II)[link] showing the atom-labelling scheme and displacement ellipsoids at the 70% probability level. For each of (I)[link] and (II)[link], the 4,4′-bi­pyridine mol­ecule has been expanded to show the entire mol­ecule; unlabelled atoms are related by the symmetry operation −x, 2 − y, −z.

Journal logoCRYSTALLOGRAPHIC
COMMUNICATIONS
ISSN: 2056-9890
Volume 73| Part 11| November 2017| Pages 1642-1646
https://doi.org/10.1107/S2056989017014396
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