桥联杂环卡宾前体[CH₃CH（NCHCHN）CH₂]₂Br₂^-的合成

桥联杂环卡宾前体[CH 3 CH（NCHCHN）CH 2 ] 2 Br 2 - 的合成 Synthesis of N-Heterocyclic Carbene Predecessor Bridged by Carbon Atoms [CH 3 CH（NCHCHN）CH 2 ] 2 Br 2 - 王志国 WANG Zhiguo 1 first-author 刘思曼 LIU Siman 1 何志坚 HE Zhijian 1 王秀锋 WANG Xiufeng 1 黄宝美 HUANG Baomei 1 黄海霞 HUANG Haixia 1 绵阳师范学院化学与化学工程系 绵阳师范学院化学与化学工程系 Department of Chemistry and Chemical Engineering,Mianyang Normal University Department of Chemistry and Chemical Engineering,Mianyang Normal University 甲基咪唑与1,2-二溴乙烷在THF（四氢呋喃）中以2∶1（摩尔比）反应合成了一种新型桥联氮杂环卡宾前体[CH3CH（NCHCHN）CH2]2Br2-,产物通过核磁和X射线衍射表征.晶体结构显示其晶体属单斜晶系P21/c,a=0.8475（3）nm,b=0.8916（3）nm,c=0.9234（3）nm,α=90°,β=108.214°,γ=90°,V=0.6628（4）nm3,Z=2,Dc=1.764 mg/m3,μ=6.097 mm-1,F（000）=348.产物分子结构中存在的大量氢键是其形成空间网状结构的主要原因. A new N-heterocyclic carbene predecessor [CH3CH（NCHCHN）CH2]2Br-2（1） has been successfully synthesized by the reaction of methyl-imidazole with BrCH2CH2Br in 2∶1 molar ratio in THF.The compound 1 has been characterized by the 1H NMR and X-ray diffraction.The results show that the crystal belongs to Monoclinic system.Crystal data: P21/c,a=0.847 5（3） nm,b=0.891 6（3） nm,c=0.923 4（3） nm,α=90°,β=108.214°,γ=90°,V=0.662 8（4） nm3,Z=2,Dc=1.764 mg/m3,μ=6.097 mm-1,F（000）=348.Hydrogen bonds play a key role for the stable structure in the compounds.The combination of non-covalent interaction leads to the formation of network structure. 氮杂环卡宾 前体 晶体结构 N-heterocyclic carbine predecessor crystal structure O641.4 绵阳师范学院引进人才科研基金资助项目（MQD2007A006） 2008-04-01 2021-04-01 4