Complex [Ag 2(DPYBIM)(dppm)](BF 4) 2·CH 3OH was obtained from the reaction of AgBF 4 and the hetero-armed tripodal ligand DPYBIM [N,N-bis(2-pyridylmethyl)-N-(2-benzimidazolylmethyl)amine] with the participation of dppm [bis(diphenylphosphino)- methane]. Single crystal X-ray diffraction analysis showed that the crystal belongs to the triclinic space group P1-. The cell parameters are: M r=1135.17, a=1.0619(2) nm, b=1.4246(3) nm, c=1.6767(3) nm, α=91.08(3)°, β=104.04(3)°, γ=101.77(3)°, V=2.4027(8) nm 3, D c=1.569 Mg/m 3, Z=2, F(000)=1140, μ=9.53 cm -1, R=0.057, wR=0.145. In the complex, one of the Ag atoms is linearly coordinated by PN from dppm and the benzimidazolyl group of the tripodal ligand, respectively, while the other is tetrahedrally coordinated by PN 3 where two of the N atoms are from the pyridine arms and one is the amino-N. Two types of intermolecular π...π interactions lead to the 1D infinite "Z"-shaped chain. The complex was characterized by elemental analysis, IR and MS. 31P NMR showed characteristic AA′XX′pattern of two symmetrical multiplets centered at δ=10.07.
Linear sweep voltammetry has been used to study the electrochemical behavior of tran-sition metal structural units Co(PPh3)2Cl2 and Co(PPh3)3Cl in DMF solution with 0.1mol L-1Et4NClO4 on Pt electrode. The results suggest that Co(Ⅱ) is reduced to Co(Ⅰ) at the first stepand the process is reversible. The Process of Co(Ⅰ) reduced to Co(0) subsequently is irreversible.The Co(Ⅰ) is not stable in solution and is oxidized easily to Co(Ⅱ).
2-甲基-8-羟基喹啉和二溴丁烷在正丁基锂的存在下反应,生成标题化合物(C24H24N2O2, Mr = 372.46)。X-射线单晶结构分析表明此晶体属于单斜晶系,空间群P21/c, a = 5.7002(5), b = 12.186(1), c = 14.312(1) , b = 92.503(2), V = 993.2(2) 3, Z = 2, m = 0.080 mm-1, Dc = 1.245 g/cm3, F(000) = 396, R = 0.0505, wR = 0.0705. 结果表明,该化合物的2个配位端基2-甲基-8-羟基-喹啉基处于间隔基团-(CH2)4-的两侧,整个分子呈现中心对称的反式构象。此外,通过分子间的p…p 堆积作用和 CH…p 作用,使分子堆积成三维网络结构。
