Poly[(μ(6)-benzene-1,3,5-tri­carboxyl­ato-κ(6) O (1):O (1′):O (3):O (3′):O (5):O (5′))tris­(N,N-di­methyl­formamide-κO)tris­(μ(3)-formato-κ(3) O:O:O′)trizinc(II)]

The asymmetric unit of the title compound, [Zn(3)(HCO(2))(3)(C(9)H(3)O(6))(C(3)H(7)NO)(3)](n), contains one Zn ion, one formate ligand, one N,N-di­methyl­formamide (DMF) ligand and one-third of a benzene-1,3,5-tri­carboxyl­ate (btc) ligand situated on a crystallographic 3 axis. Each Zn(II) atom is coordinated by one O atom from a DMF ligand, two O atoms from two btc ligands and three O atoms from three formate ligands in a distorted octa­hedral geometry. The Zn(II) atoms are connected by the formate and btc ligands, forming hexanuclear cores, which are linked by btc ligands, constructing a two-dimensional layered network along the ab plane.