摘要
氮杂环卡宾前体[CH3CH2(CHNCHCHN)CH2]22+[Br]22-与Ag2O在45℃下在乙腈溶液中以1:2的摩尔比反应成功合成四环溴化银聚合物1,2-亚乙基,3,3'-乙基咪唑[[(CH3CH2{(CHNCHCHN)}CH2]2]n2+[(Ag2Br4)]n2-,产物通过元素分析,1HNMR和X-ray衍射及差热分析表征.晶体结构表明配合物属于单斜晶体,空间群均为P2(1)/c,化合物晶胞参数a=13.862(4)nm,b=12.822(3)nm,c=11.447(3)nm,α=90.00°,β=113.277(5)°,γ=90.00°,V=1 869.0(9)nm3,Z=2,F(000)=1 108.00,D=2.6210 Mg/m3,μ=7.492 mm-1,R1=0.0296,wR2=0.0765.化合物由双咪唑阳离子[(CH3CH2{(CHNCHCHN)}CH2]22+和四环溴化银阴离子[Ag2Br4]2-构成.
The reaction of the NHC precursor[CH3 CH2（CHNCHCHN）CH2 ]2 2 ＋[Br]2 2 ﹣ with Ag2 O in a 1：2 molar ratio at 45 ℃ in CH3 CN yields the title complex [[（ CH3 CH2{（ CHNCHCHN ）}CH2 ]2 ]n2 ＋[（Ag2 Br4 ）]n2 ﹣ . The title compound has been characterized by 1 HNMR and single ﹣ crystal X ﹣ ray diffraction and TGA analysis. It crystallizes in monoclinic,space group p21 / c with a = 13. 862（4）/ nm,b = 12. 822（3）/nm,c = 11. 447（3）/ nm,α = 90. 00°,β = 113. 277（5）°,γ = 90. 00°,V = 1869. 0（9）nm3 ,Z = 2 ,D = 2. 621 0Mg / m3 ,μ = 7. 492 / mm ﹣ 1 and F（000）= 1108. 00. The structure was refined to R1 = 0. 0296 and wR2 =0. 0765 for 1696 observed reflections with F2 ﹥ 2σ（F2）. The title salt consists of a carbon ﹣ bridged imidazoli-umcation[（CH3 CH2{（CHNCHCHN）}CH2 ]2 2 ＋ and a 4th ﹣ ring silver bromide polymer anionic[Ag2 Br4 ]2 ﹣ .
出处
《绵阳师范学院学报》
2015年第8期1-5,共5页
Journal of Mianyang Teachers＇ College
基金
四川省教育厅基金项目(13CZ0016)
关键词
银
咪唑盐
合成
结构
silver
imidazolium salt
synthesis
structure
