catena-Poly[[(1,10-phenanthroline-κ(2) N,N′)zinc]-μ-4-sulfonato­benzo­triazolido-κ(3) N (3),O:N (1)]

In the title complex, [Zn(C(6)H(3)N(3)O(3)S)(C(12)H(8)N(2))](n), the Zn(2+) cation is coordinated by two N atoms from two 4-sulfonato­benzotriazolide dianions, two N atoms from a 1,10-phenanthroline mol­ecule and a sulfonate O atom from a 4-sulfonato­benzotriazolide anion, displaying a distorted ZnN(4)O trigonal–bipyramidal geometry. Each 1,10-phenanthroline ligand displays a bidentate chelating coordinating mode and the 4-sulfonato­benzotriazolide ions act as μ(2)-bridges, linking different Zn(2+) cations into a chain along the b axis. The crystal structure is consolidated by C—H⋯O hydrogen-bonding inter­actions.