At room temperature, the reducing reaction between the bis(diphenylphosphino)butane (dppb) ligand and the compound (tfac=2-thenoyltrifluoroacetone) gave luminescent copper complex [Cu(dppb)(tfac)]2. They have been characterized by physicochemical and spectroscopic methods. Crystal structure of the title complex shows that 2-thenoyltrifluoroacetone behaves as chelating ligand and dppb coordinates as bridging bidentate ligand to Cu atoms in the newly prepared copper complex. The crystal is monoclinic, space group P21/n, with cell parameters a = 1.031 0(2) nm, b = 1.873 0(4) nm, c = 1.763 0(4) nm, β = 95.10(3)°, Z = 4, V = 3.391 0(12) nm3, R = 0.060 3, wR = 0.143 4. CCDC: 228393.
A binuclear copper（I） complex [Cu2（dppm）2（C7H6N2）2]（NO3）2 （C7H6N2 = benzimidazole, dppm = Ph2PCH2PPh2） has been synthesized and characterized by X-ray crystallography.The crystal belongs to monoclinic, space group C2/c with a = 14.167（3）, b = 21.209（4）, c =20.680（4）A°, β = 103.93（3）°, C32H28CuN3O3P2, Mr = 628.05, Z = 8, μ = 0.868 mm^-1, V = 6031 （2） ,A°^3,F（000） = 2592, De= 1.383 g/cm^3, R = 0.0593 and wR = 0.1736. A total of 5297 independent reflections were collected, of which 3503 were observed with 1 〉 2σ（/）. The central copper atom is tri-coordinated by phosphorus atoms from bridging dppm and nitrogen atom from benzimidazole. In the coordination sphere, the bond lengths of Cu-P（1） and Cu-P（2） are 2.2607（17） and 2.2503（16） A°,respectively and the P-Cu-P bond angle is 127.26（6）°.
KANG Bei-ShengZHAO DongGUO Li-BingZHENG XinSUN Yu-An
At room temperature, dibenzoyl peroxide undergoes oxidative addition reaction with metallic copper powder and 4 dimethylamine pyridine which affords the last products as binuclear copper?complex (1), [Cu(C6H5COO)2(C7H10N2)]2. This complex is further characterized by spectroscopic methods. The structure of complex (1) has been determined by a single crystal X ray analysis. Crystallographic data are as follows: monoclinic, space group P21/n, a=10.446(2)?, b=11.140(5)?, c=17.179(3)?, β=95.92(3)°, V=1988.4(7)?3, Z=4, F(000)=884, μ=11.27cm-1, D(calcd.)=1.429g·cm-3, R=0.0399, Rw=0.1202. Each copper?ion is coordinated by two bridging bidentate benzoate and 4 dimethylamine pyridine to form dimeric molecule. CCDC: 188744.
