Text this: Crystal structure of catena-poly[aqua-(μ 2(3,4-dimethylthieno[2,3-b]thiophene-2,5-dicarboxylato-κ 2 O:O′)-(3,6-bis(4′-pyridyl)-1,2,4,5-tetrazine-κ 1 N)zinc(II)], C22H16N6O5S2Zn