<abstract abstract-type="main" xml:lang="en"> <title> <x xml:space="preserve">Abstract</x> </title> <p>In the title mixed‐ligand metal–organic polymeric compound, {[Zn(C<sub>10</sub>H<sub>8</sub>O<sub>4</sub>)(C<sub>12</sub>H<sub>14</sub>N<sub>6</sub>)]·H<sub>2</sub>O}<sub><italic>n</italic></sub>, the asymmetric unit contains a divalent Zn<sup>II</sup> cation lying on a twofold axis, one half of a fully deprotonated benzene‐1, 4‐diacetate (PBEA) ligand, one half of a 1, 4‐bis[(1<italic>H</italic>‐1, 2, 4‐triazol‐1‐yl)methyl]benzene (BTX) ligand and a water molecule, also lying on a twofold axis. Each Zn<sup>II</sup> centre is surrounded by two O‐donor atoms from monodentate carboxylate groups belonging to two different PBEA<sup>2−</sup> ligands and by two triazole N‐donor atoms from two different BTX ligands. Single‐crystal X‐ray diffraction analysis revealed that the compound has a fivefold interpenetrating diamondoid three‐dimensional metal–organic framework.</p> </abstract>