摘要
以1,2-双(二苯基膦)乙烷(dppe)、1,4-双(二苯基膦)丁烷(dppb)和卤化亚铜作为初始原料,合成得到1个三核铜(I)溴化物[{Cu2(μ-dppe)(μ-Br)2}(μ-dppe)2CuBr](1)和1个双核铜(I)碘化物[{Cu(dppb)I}2(μ-dppb)](2).X-射线单晶衍射表明:配合物1为三核铜配合物,Cu1和Cu2两原子采用常见的四配位方式,分别与2个Br原子和2个P原子连接构成1个变型四面体,而Cu3原子采取三配位模式,与1个Br和2个P原子相连接形成1个平面三角形,Cu1、Cu2和Cu3这3个铜原子又共同构成了1个近似等腰的平面三角形;配合物2为双核铜配合物,3个dppb配体表现出2种配位方式:2个以二齿螯合方式分别与1个Cu原子连接,1个以桥联方式与2个相同的{Cu(dppb)I}砌块相连接.
Utilizing 1,2-bis(diphenylphosphino)ethane (dppe), 1,4-bis(diphenylphosphino)butane (dppb), and cuprous halide as the starting materials, a trinuclear copper (I) bromide complex [{Cu2 (μ-dppe)(μ-Br)E}(μ dppe)2CuBr] (1) and a binuclear copper(I) iodide complex [{Cu(dppb)I}2(μ-dppb)] (2) were synthesized and structurally characterized. As revealed by single-crystal X-ray diffraction, compound 1 is a trinuclear copper(I) complex in which the Cul and Cu2 atoms adopt a common four-coordinate mode. Each connects with two bromide and two phosphorus atoms, respectively, forming a distorted tetrahedral configuration. The Cu3 atom is trigonally coordinated via two phosphorus and one bromide atoms by generating a plane triangle. These three copper(I) atoms (Cul, Cu2, Cu3) give a nearly isosceles triangle together. Compound 2 is a binuclear Cu(I) complex, in which these three dppb ligands offer two kinds of coordination fashions: two of them are chelating, one for each copper atom. However, the third one acts as a bridge assembling two same {Cu (dppb)I} moieties into a copper(I) dimer.
出处
《有色金属科学与工程》
CAS
2013年第1期31-36,共6页
Nonferrous Metals Science and Engineering
基金
国家自然科学基金资助项目(21001057
21163009)
国家教育部科学技术研究重点项目(211088)
国家留学人员科技活动项目择优资助(赣人社字[2011]474号)
江西省青年科学家(井冈之星)培养计划资助项目(20122BCB23016)
结构化学国家重点实验室科学基金项目(20110015)
关键词
一价铜卤化物
双膦配体
晶体结构
三核配合物
双核配合物
copper(I) halide complex
diphosphine
crystal structure
trinuelear complex
binuclear complex