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In the title polymeric complex, [Sr(C 7 H 3 NO 4 )(H 2 O) 2 ]  n  , the Sr II  atom is eight-coordinated by four O atoms and one N atom of four pyridine-2,4-dicarboxyl­ate (py-2,4-dc) ligands and three O atoms of three coordinated water mol­ecules in a dodeca­hedral geometry. These units are connected  via  the carboxyl­ate O atoms and water mol­ecules, building polymeric layers parallel to (100). In the crystal structure, non-covalent inter­actions consisting of O—H⋯O hydrogen bonds and π–π stacking inter­actions [centroid–centroid distances = 3.862 (17) and 3.749 (17) Å] connect the various components, forming a three-dimensional structure.

Poly[μ2-aqua-aqua-μ4-pyridine-2,4-dicarboxylato-strontium]

Poly[μ₂-aqua-aqua-μ₄-pyridine-2,4-dicarboxylato-strontium]