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The reaction of cadmium(II) and zinc(II) salts with 3,6-bis(pyridin-3-yl)-1,2,4,5-tetrazine (3,3‘-pytz) affords coordination polymers, the structures of which are controlled by the choice of alcoholic solvent. Reaction of Cd(NO₃)₂·4H₂O and 3,3‘-pytz in MeOH/CH₂Cl₂ yields the 1:1 ligand/metal complex {[Cd(μ-3,3‘-pytz)(NO₃)₂(MeOH)₂]}_∞, 1 [triclinic space group P1̄; a = 9.011(2) Å, b = 9.338(4) Å, c = 11.941(2) Å, α = 74.51(3)°, β = 86.94(4)°, γ = 86.50(5)°; Z = 2]. Replacement of MeOH with EtOH or ⁱPrOH in the above reaction affords respectively the 3:2 ligand/metal complexes {[Cd₂(μ-3,3‘-pytz)₃(NO₃)₄](EtOH)}_∞, 2 [triclinic, space group P1̄; a = 9.060(4) Å, b = 9.848(3) Å, c = 13.208(4) Å, α = 86.76(3)°, β = 79.04(3)°, γ = 88.14(2)°; Z = 2] and {[Cd₂(μ-3,3‘-pytz)₃(NO₃)₄](CH₂Cl₂)}_∞, 3 [triclinic space group P1̄; a = 8.981(16) Å, b = 9.93(2) Å, c = 13.19(2) Å, α = 94.18(15)°, β = 102.35(13)°, γ = 88.12(15)°; Z = 2]. Complex …