Crystal Structure of the Cyano-Bridged Coordination Copper(I) Complex [Cu₈(dpe)₄(CN)₈]·2dpe·H₂O

Cyano-bridged layered coordination polymer [Cu₈(dpe)₄(CN)₈]·2dpe·H₂O (1) is prepared by the hydrothermal reaction of CuCN and dpe (dpe = 1,2-di-4-pyridylethylene) in the presence of Cs₃K[Re₆S₈(CN)₆]·2H₂O. The [Cu₈(dpe)₄(CN)₈] complex is an isomer of the earlier described [Cu₂(CN)₂(dpe)] with a 3D framework structure. The structure of 1 is triclinic, \(P\bar{1}\) space group, a = 11.9229(8) Å, b = 11.9549(8) Å, c = 14.1984(10) Å, α = 102.019(2)°, β = 102.370(2)°, γ = 104.151(2)°, V = 1842.8(2) Å³, Z = 1, d_calc = 1.647 g/cm³. The Cu atoms in 1 have a triangular coordination environment formed by N atoms of the bridging dpe molecule and N and C atoms of the ambidentate bridging CN ligands.