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In the title complex, [Zn(N3)2(C7H10N2)2], the ZnII atom is coordinated by two N atoms from two 4-(dimethyl­amino)­pyridine (DMAP) ligands and by two N atoms from two azide anions in a distorted tetra­hedral coordination geometry. In the crystal, weak C—H...N hydrogen bonds between the DMAP and azide ligands link these discrete complex mol­ecules into a three-dimensional supra­molecular network.

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The title layered polymer, [Co(N3)2(C7H10N2)2]n, contains CoII, azide and 4-(dimethyl­amino)­pyridine (4-DMAP) species with site symmetries m2m, 2 and m, respectively. The Co2+ ion adopts an octa­hedral coordination geometry in which four N atoms from azide ligands lie in the equatorial plane and two 4-DMAP N atoms occupy the axial positions. The CoII atoms are connected by two bridging azide ligands, resulting in a chain parallel to the c axis.
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