Synthesis and properties of the chain-like polymeric copper (II) complexes bridged by bis(diphenylphosphino oxide)ethane

At room temperature, the chain‐like polymeric copper (II) complexes bridged by bis (diphenylphosphino oxide) ethane (dppeO₂), [Cu(dppeO₂)X₂]_n[X? CI(1), Br(2)] have been prepared and characterized by elemental analysis, ³¹P NMR, TG‐DTA and X‐ray analysis for [ CuBr₂ ( dppeO₂) ]_n. The chain is composed of submits containing tetrahedron coordinated copper (II) atoms. The four‐coordinated copper(II) atom is ligated to another four‐coordinated copper(II) atom through dppeO₂. The coordination sphere of copper (II) atom is completed by two monodentate bromide and two oxygen atoms from bridging dppeO₂. Crystal data are as follows: C₂₆‐H₂₄CuP₂Br₂O₂, 0.50 mm × 0.40 mm × 0.40 mm, monoclinic, space group: C₂/c, λ = 0.07107 nm(Mo K _α), a= 1.2286(2) nm, b=2.0555(8) nm, c = 1.0652(2) nm, β=97.366(9)°, V = 2.668nm₃ Z = 4, D_calc =1.628 g·cm^?3, R=0.066; R_w = 0.091.