Synthesis and Crystal Structure of a Novel Binuclear Cu(Ⅱ) Complex with Tetradentate Schiff-base Lig

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A novel binuclear complex ([Cu2(μ2-shed)(hshed)]((ClO4)(H2O, h2shed = N-salicyli- dene-N’-(2-hydroxyethyl)ethylenediamine) has been synthesized and structurally characterized by X-ray diffraction analysis. It crystallizes in monoclinic, space group P21/c with a = 12.511(10), b = 15.750(12), c = 14.281(12) , β = 100.564(14)o, C22H31ClN4O9Cu2, Mr = 658.04, V = 2766(4) 3, Z = 4, Dc = 1.580 g/cm3, ((MoK() = 1.689 mm-1, F(000) = 1352, the final R = 0.0528 and wR = 0.1433 for 4880 independent reflections with Rint = 0.0577. The complex is a binuclear copper compound, and two Cu(II) ions in the binuclear cation are in different coordination environments. The Cu(1) ion adopts a distorted square pyramidal geometry (τ = 0.22) with four donor atoms (N2O2) of the ligand in the basal plane, and one hydroxyl oxygen atom with protonated form occupying the apical position. The Cu(2) ion assumes the geometry of a distorted square plane with four donor atoms (N2O2) of the ligand. The Cu...Cu separation is 3.103 . In addition, N-H…O and C-H…O intermolecular hydrogen bonding interactions link these binuclear cations into a quasi one-dimensional chain along the a axis. A novel binuclear complex ([Cu2 (μ2-shed) (hshed)] ((ClO4) (H2O, h2shed = N-salicyli- dene-N’- (2- hydroxyethyl) ethylenediamine) has been synthesized and structurally characterized by X- ray diffraction analysis. It crystallizes in monoclinic space group P21 / c with a = 12.511 (10), b = 15.750 (12), c = 14.281 (12) , β = 100.564 (14) o, C22H31ClN4O9Cu2, Mr = 658.04 , V = 2766 (4) 3, Z = 4, Dc = 1.580 g / cm3, (MoK () = 1.689 mm -1, F (000) = 1352, final R = 0.0528 and wR = 0.1433 for 4880 The complex is a binuclear copper compound, and two Cu (II) ions in the binuclear cation are in different coordination environments. The Cu (1) ion adopts a distorted square pyramidal geometry (τ = 0.22) with four donor atoms (N2O2) of the ligand in the basal plane, and one hydroxyl oxygen atom with protonated form occupying the apical position. The Cu (2) ion assumes the geometry of a distorted square plane with four donor atoms (N2O2) of the ligand. The Cu ... Cu se paration is 3.103 In. In addition, N-H ... O and C-H ... O intermolecular hydrogen bonding interactions link these binuclear cations into a quasi one-dimensional chain along the a axis.
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