关键词: 银络合物, 膦 P, 磷三十一核磁共振谱法, 结构表征

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 P(1-bar). 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. ~(31)P NMR showed characteristic AA'XX' pattern of two symmetrical multiples centered δ = 10.07.

Key words: SILVER COMPLEX, PHOSPHINE, 31PNMR, STRUCTURE CHARACTERISTICS