Synthesis, Crystal Structure and Catalytic Behavior of 1-Ethyl-3-benyl-imidazolyl Tetranuclear N-Heterocyclic Carbene Silver Bromide

• 作者: BIAN Qing-Quan LIU Si-Man LIU Ting SU Zhi-Xian WANG Zhi-Guo
• 来源期刊: 结构化学
• 学科: 化学
• 关键词: N-杂环卡宾 晶体结构 溴化银 催化性能 乙基 合成 四核 咪唑
• 年，卷（期）: 2012,（9）
• 页码范围: 1334-1338
• 页数: 5页
• 分类号: O626|O614.121
• 语种: 英文

摘要

The title complex [Ag（carbene）2]2[Ag2Br4] has been synthesized by the reaction of Ag2O with 1-ethyl-3-benyl-imidazolium bromide in DMSO at room temperature, and characterized by elemental analysis, 1H NMR and single-crystal X-ray diffraction analysis. It crystallizes in triclinic, space group P with a = 10.1597（10）, b =11.0646（11）, c = 13.0245（14） , α = 102.230（2）, β = 90.606, γ = 113.9250（10）o, V = 1300.3（2） 3, Mr = 748.06, Z = 2, Dc = 1.911 g/cm3, μ（MoKα） = 4.60 mm-1 and F（000） = 728. The structure was refined to R = 0.0316 and wR = 0.0835 for 3744 observed reflections with I 〉 2σ（I）. The title compound crystallizes as a centrosymmetric tetranuclear compound. One half of the molecule comprises the asymmetric unit of the structure. The Ag（1） atom is nearly linear or T-shaped when the Ag（1）-Ag（2） interaction is taken into consideration, which is bi-coordinated by two carbene carbon atoms. The Ag（2） atom adopts tetrahedral geometry. The catalytic behavior of the title complex has been investigated, and the results indicate it has a highly catalytic activation for L-lactide polymerization.

作者信息

序号	姓名	单位	发文数	被引次数	H指数	G指数
1	WANG Zhi-Guo		1	0	0.0	0.0
2	SU Zhi-Xian		1	0	0.0	0.0
3	BIAN Qing-Quan		1	0	0.0	0.0
4	LIU Si-Man		1	0	0.0	0.0
5	LIU Ting		1	0	0.0	0.0