| 含有大的吸电子取代基化合物GeR_2Cl_2(R=Ar,Ar′和Ar″)的合成、晶体结构与~(19)F NMR |
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| 引用本文： | 薛宝玉,李文锋,陈羽飞,樊燕鸽,Keith B.Dillon.含有大的吸电子取代基化合物GeR_2Cl_2(R=Ar,Ar′和Ar″)的合成、晶体结构与~(19)F NMR[J].河南科学,2012,30(8):1029-1032. |
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| 作者姓名： | 薛宝玉 李文锋 陈羽飞 樊燕鸽 Keith B.Dillon |
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| 作者单位： | 1. 河南省科学院化学研究所,郑州,450002
2. Chemistry Department,University of Durham,Durham DH1 3LE,UK |
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| 摘 要： | GeCl4与ArLi和Ar′Li(Ar″Li与Ar′Li 1∶1的混合物)反应生成化合物GeAr2Cl2,GeArCl3和GeAr″2Cl2,测定了GeAr2Cl2和GeAr″2Cl2的晶体结构,并进行了19F NMR表征.
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| 关 键 词： | 大的吸电子基 Ar=24 6-(CF3)3C6H2 Ar′=2 6-(CF3)2C6H3 Ar″=24 -(CF3)2C6H3 GeAr2Cl2 GeAr2′Cl2 19F NMR |
Synthesis, Structures and 19F NMR of SnR2Cl2 [R=2, 4, 6- （CF3） 3C6H2, 2, 6- （CF3） 3C6H3, 2,4- （CF3） 3C6H3] |
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| Xue Baoyu
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Li Wenfeng
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Chen Yufei
,
Fan Yange
,
Keith B.Dillon.Synthesis, Structures and 19F NMR of SnR2Cl2 [R=2, 4, 6- （CF3） 3C6H2, 2, 6- （CF3） 3C6H3, 2,4- （CF3） 3C6H3][J].Henan Science,2012,30(8):1029-1032. |
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| Authors: | Xue Baoyu Li Wenfeng Chen Yufei Fan Yange Keith BDillon |
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| Institution: | Xue Baoyu, Li Wenfeng, Chen Yufei, Fan Yange, Keith B.Dillon (1. Institute of Chenmistry, Herman Academy of Sciences, Zhengzhou 450002, China： 2. Chemistry Department, University of Durham, Durham DH1 3LE, UK) |
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| Abstract: | Variation in the position of CF3 groups in several synthesized aromatic Ge compounds has been studied by 19F NMR spectroscopy. The compounds may be formulated as GeAr2Cl2, GeArCl3 and GeAr″2Cl2, Ar=2,4, 6- （CF3） 3C6H2, At′ =2, 6- （CF3） 2C6H3, Ar″ =2, 4- （CF3） 2C6H3. At, At′ and Ar″ are all bulky, strongly electron-withdrawing ligands. 19F NMR studies of the variation in position of CF3 substituents in these compounds as revealed by chemical shifts may be correlated with intra-molecular Ge … F interactions derived from single-crystal X-ray diffraction data. These interactions are considered to play an important role in the stabilization of these compounds. |
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| Keywords: | electron-withdrawing ligands Ar=2 4 6- （CF3） 3C6H2 Ar′=2 6- （CF3） 2C6H3 Ar″=2 4- （CF3） 2C6H3 GeAr2Cl2 GeAr′2Cl2 19FNMR |
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