配体3,5-二(2-吡咯)吡唑(HL)与二硝酸根桥联双钯配合物在溶液中通过配位作用形成了一系列吡唑基双钯(Ⅱ,Ⅱ)夹子[Pd_2(bpy)_2L2]2+(1)、[Pd_2(dmbpy)_2L_2]~(2+)(2)和[Pd_2(phen)_2L_2]~(2+)(3)(bpy=2,2′-联吡啶,dmbpy=4,4′-二甲基-2,2′-联吡啶,phen=1,10-菲咯啉)。运用~1H NMR、~(13)C NMR、ESI-MS和X射线单晶衍射等测试手段对1~3的结构进行了表征。其晶体结构中存在弱的Pd…Pd键(0.303~0.313 nm)相互作用,通过分子间的氢键作用形成一维二重螺旋结构,可作为一种新颖的Suzuki-coupling反应的高效催化剂。 The ligands 3,5-bis (2-pyrrole) pyrazole (HL) and dinitrate bridged bis-palladium complexes formed a series of pyridylpyridyl bis-palladium (Ⅱ, Ⅱ) Pd_2 (bpy) _2L2] 2+ (1), [Pd_2 (dmbpy) _2L_2] ~ (2 +) (2) and [Pd_2 -bipyridine, dmbpy = 4,4’-dimethyl-2,2’-bipyridine, phen = 1,10-phenanthroline). The structures of 1 ~ 3 were characterized by ~ 1H NMR, ~ (13) C NMR, ESI-MS and X-ray single crystal diffraction methods. The weak Pd Pd bonds (0.303 ~ 0.313 nm) exist in the crystal structure, which can be used as a novel efficient Suzuki-coupling catalyst by forming a one-dimensional double helix structure through the intermolecular hydrogen bonding.