两种β-二亚胺锡化合物的合成与表征（英文）

doi:10.6023/cjoc201611035

有机化学 ›› 2017, Vol. 37 ›› Issue (5): 1300-1305.DOI: 10.6023/cjoc201611035 上一篇下一篇

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两种β-二亚胺锡化合物的合成与表征（英文）

马小莉, 邓紫嫣, 姚苗苗, 钟明东, 李文玲, 杨智

北京理工大学化学与化工学院北京 100081

收稿日期:2016-11-25 修回日期:2016-12-30 发布日期:2017-02-08
通讯作者: 马小莉,杨智 E-mail:maxiaoli@bit.edu.cn;zhiyang@bit.edu.cn
基金资助:
国家自然科学基金（No.21671018）资助项目.

Synthesis and Characterization of Two β-Diketiminato Tin(Ⅳ) Compounds

Ma Xiaoli, Deng Ziyan, Yao Miaomiao, Zhong Mingdong, Li Wenling, Yang Zhi

School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081

Received:2016-11-25 Revised:2016-12-30 Published:2017-02-08
Contact: 10.6023/cjoc201611035 E-mail:maxiaoli@bit.edu.cn;zhiyang@bit.edu.cn
Supported by:
Project supported by the National Nature Science Foundation of China (No. 21671018).

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摘要/Abstract

N，N-二（2，6-二异丙基苯基）-2，4-戊二亚胺的锂盐与二甲基二氯化锡的反应以及N，N-二（2，6-二乙基苯基）-2，4-戊二亚胺的锂盐与三甲基氯化锡的反应均以物质的量比为1：1在室温下进行，分别得到了新化合物N（Ar）=C（Me）CH=C（NHAr）CH₂SnMe₂Cl·C₇H₈（1）（Ar=2，6-ⁱPr₂C₆H₃）和[N（Ar'）C（Me）=CHC（=NAr'）CH₂SnMe₂]₂·CH₂Cl₂（2）（Ar'=2，6-Et₂C₆H₃）.通常来说，β-二亚胺配体与金属卤化物反应容易形成氮-金属-氮键，而化合物1和2中由于SnMe₂Cl与SnMe₃基团的路易斯酸性使得锡-氮键断裂和锡-碳键的生成得到了少见的氮-锡-碳键.化合物2是罕见的具备两个共振结构式的锡二聚体.通过核磁共振、元素分析及X射线单晶衍射分析鉴定了这两种化合物的结构.通过这两个结构的对比探讨了二聚体2的形成机理.

关键词: β-二亚胺配体, 金属卤化物, 锡二聚体, 氮-锡-碳键

The reactions of L¹Li [L¹=HC(CMeNAr)₂, Ar=2,6-ⁱPr₂C₆H₃] with Me₂SnCl₂, and L²Li [L²=HC(CMeNAr')₂, Ar'=2,6-Et₂C₆H₃] with Me₃SnCl in a molar ratio of 1:1 were carried out at room temperature and acquired two new compounds, N(Ar)=C(Me)CH=C(NHAr)CH₂SnMe₂Cl·C₇H₈ (1) and [N(Ar')C(Me)=CHC(=NAr')CH₂SnMe₂]₂·CH₂Cl₂ (2), respectively. Different from regular nitrogen-metal-nitrogen bonds generated by the reactions of β-diketiminato ligands with metal halides, uncommon nitrogen-tin-carbon bonds in compounds 1 and 2 were obtained by Sn-N bond cleavage and concomitant Sn-C bond formation due to the Lewis acidity of SnMe₃ and SnMe₂Cl group. Compound 2 is a rare tin dimer with two resonant structures. Two compounds have been confirmed by ¹H NMR, ¹³C NMR, elemental analysis, and single crystal X-ray structural analysis. Through the comparison of compounds 1 and 2, the formation mechanism of dimer 2 has been investigated.

Key words: β-diketiminato ligands, metal halides, tin dimer, nitrogen-tin-carbon bonds

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马小莉, 邓紫嫣, 姚苗苗, 钟明东, 李文玲, 杨智. 两种β-二亚胺锡化合物的合成与表征（英文）[J]. 有机化学, 2017, 37(5): 1300-1305.

Ma Xiaoli, Deng Ziyan, Yao Miaomiao, Zhong Mingdong, Li Wenling, Yang Zhi. Synthesis and Characterization of Two β-Diketiminato Tin(Ⅳ) Compounds[J]. Chin. J. Org. Chem., 2017, 37(5): 1300-1305.

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两种β-二亚胺锡化合物的合成与表征（英文）

Synthesis and Characterization of Two β-Diketiminato Tin(Ⅳ) Compounds

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