Structural diversity in coordination polymers with angular ditetrazole ligands

Three new coordination polymers with angular bis(1-tetrazol)diphenyl ligands as bridges, {[Ag(L-1)(2)](NO3)center dot 2H(2)O}(infinity) [L-1 = 4,4'-bis(1-tetrazolyl)diphenyl methane], 1, [Ag(L-2)(2)(NO3)](infinity) [L-2= 4,4'-bis(1-tetrazolyl)diphenyl sulfone], 2, and [CuBr(L-3)(0.5)](infinity) [L-3= 4,4'-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 M(4)L(4)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. (C) 2010 Elsevier B.V. All rights reserved.