Two zinc-triazole-biphenyldicarboxylate coordination polymers affording a 3D 4-connected 2-fold interpenetrating diamond net and a 2D 6-connected hxl net

► Two new compounds were synthesized under hydrothermal conditions. ► 1 exhibits a 4-connected porous 2-fold interpenetrating diamond network. ► 2 is a 6-connected hxl net. ► The two compounds show emission properties at room temperature in the solid state.