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Figure 4 π–π Stacking inter­action between two aromatic rings of (pydc)2− units, with centorid–centroid distance of 3.4825 (8) Å ([{1\over 2}]x, −[{1\over 2}] + y, −[{1\over 2}] + z); C–O⋯π Stacking inter­actions between C=O groups of carboxyl­ate and the aromatic rings of pyridine-2,6-dicarboxyl­ate with O⋯π distances of 3.1563 (12) Å for C13—O5⋯Cg1 ([{1\over 2}]x, [{1\over 2}] + y, −[{1\over 2}] + z) and 3.2523 (12) Å for C6—O1⋯Cg2 ([{1\over 2}]x, −[{1\over 2}] + y, [{1\over 2}] + z) [Cg1 and Cg2 are the centroids for rings N1/C1–C5 and N2/C8–C12, respectively].

ISSN: 2056-9890
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