A three-dimensional porous metal-organic framework based on cyano unit and 1,4-bis(1,2,4-triazol-1-yl)butane (btb): {[Cu ₈(btb) ₂(CN) ₈]·3H ₂O} _n

The title coordination polymer 1, {[Cu ₈(btb) ₂(CN) ₈]·3H ₂O} _n (btb = 1,4-bis(1,2,4-triazol- 1-yl)butane), has been hydrothermally synthesized and structurally characterized by singlecrystal X-ray diffraction. Complex 1 crystallizes in monoclinic, space group C2/c with a = 1.2938(3), b = 1.9422(5), c = 0.9406(2) nm, β = 121.891(4)°, V = 2.0066(9) nm ³, C ₂₄H ₃₀Cu ₈N ₂₀O ₃, M _r = 1155.00, D _c = 1.912 g/cm ³, μ(MoKα) = 4.209 mm ^-1, F(000) = 1140, GOF = 1.184, Z = 2, the final R = 0.0634 and wR = 0.1503 for I > 2o(I). In complex 1, one-dimensional CuCN zigzag chains are linked by triazolyl groups of btb ligands to form two-dimensional networks, which are further bridged by 1,4-butyl moieties of btb ligands to fabricate a three-dimensional order framework, in which one-dimensional ellipsoid-like channels are observed.