Structural diversity in coordination polymers with angular ditetrazole ligands

Three new coordination polymers with angular bis(1-tetrazol)diphenyl ligands as bridges, {[Ag(L1)2](NO3) ⋅ 2H2O}∞ [L1 = 4,4ʹ-bis(1-tetrazolyl)diphenyl methane], 1, [Ag(L2)2(NO3)]∞ [L2 = 4,4ʹ-bis(1-tetrazolyl)diphenyl sulfone], 2, and [CuBr(L3)0.5]∞ [L3 = 4,4ʹ-bis(1-tetrazolyl)diphenyl ether], 3, are reported, which show unique 2D structural types. Complex 1 forms 1D double-stranded helical chains where the cavities are threaded by linear hydrogen bondings formed by the co-crystallized water molecules and nitrate anions and complex 2 shows 2D grids involving M4L4 64-membered metallocycles composed of helical chains, while complex 3 exhibits a 2D pleated net comprising 1D channels linked by the double-chain CuBr ribbons.