The　title　complex,　[Cu(C6H4N3)]　n　,　was　synthesized　by　the　reaction　of　cupric　nitrate,　1H-benzotriazole　(BTAH)　and　aqueous　ammonia　under　hydrothermal　conditions.　The　asymmetric　unit　contains　three　crystallographically　independent　CuI　cations　and　two　1H-benzotriazolate　ligands.　Two　of　the　CuI　cations,　one　with　a　linear　two-coordinated　geometry　and　one　with　a　four-coordinated　tetrahedral　geometry,　are　located　on　sites　with　crystallographically　imposed　twofold　symmetry.　The　third　CuI　cation,　with　a　planar　three-coordinated　geometry,　is　on　a　general　position.　Two　CuI　cations　are　doubly　bridged　by　two　BTA　-　ligands　to　afford　a　noncentrosymmetric　planar　[Cu　2(BTA)2]　subunit,　and　two　[Cu2(BTA)　2]　subunits　are　arranged　in　an　antiparallel　manner　to　form　a　centrosymmetric　[Cu2(BTA)2]2　secondary　building　unit　(SBU).　The　SBUs　are　connected　in　a　crosswise　manner　via　the　sharing　of　four-coordinated　Cu　I　cations,　Cu-N　bonding　and　bridging　by　two-coordinate　CuI　cations,　resulting　in　a　one-dimensional　chain　along　the　c　axis.　These　one-dimensional　chains　are　further　linked　by　C-H⋯π　and　weak　van　der　Waals　interactions　to　form　a　three-dimensional　supramolecular　architecture.　©　2014　International　Union　of　Crystallography.