| Synthesis and Crystal Structure of Tetra（diisopropylamido—N）ytterbium Mono（tetrahydrofuran—O）lithium |
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| 引用本文： | 薛明强,姚英明,毛礼胜,沈琪,孙杰. Synthesis and Crystal Structure of Tetra（diisopropylamido—N）ytterbium Mono（tetrahydrofuran—O）lithium[J]. 结构化学, 2003, 22(2): 147-150 |
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| 作者姓名： | 薛明强 姚英明 毛礼胜 沈琪 孙杰 |
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| 作者单位： | XUE Ming-Qianga YAO Ying-Minga MAO Li-Shenga SHEN Qia② SUN Jieb a(Department of Chemistry，Suzhou University，Suzhou 215006，China) b(Shanghai Institute of Organic Chemistry，The Chinese Academy of Sciences，Shanghai 200032，China) |
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| 基金项目： | Supported by the National Natural Science Foundation of China (20072027)，Department of Education of Jiangsu province，and the Key Laboratory of Organic Synthesis of Jiangsu province |
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| 摘 要： | 1 INTRODUCTION The lanthanide amide complexes are excellent synthetic precursors for lanthanide derivatives, par- ticularly in the reactions involving protonic rea- gents[1]. A few types of lanthanide amide complexes, from homoleptic three- to four-coordinate, have been known for some time[2～4]. Recently, we begin to examine the utility of amide with less steric bulk, such as diphenylamide and diisopropyamide, as li- gands to synthesize homoleptic lanthanide amide complexes. For diphen…
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| 关 键 词： | 镱 锂 配合物 合成 晶体结构 X射线衍射 Yb（C6H14N）4Li（C4H8O） |
Synthesis and Crystal Structure of Tetra(diisopropylamido-N)ytterbium Mono(tetrahydrofuran-O)lithium |
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| Abstract: | The reaction of anhydrous YbCl3 with LiNPri2 in 1:3 molar ratio gave the homo- leptic lanthanide amide ate complex Yb(C6H14N)4Li(C4H8O). The crystal structure was determined by X-ray diffraction and the following crystallographic data were obtained: C28H64N4OYbLi, Mg = 652.82, monoclinic, P21/c (#14), a = 15.239(3), b = 21.502(6), c = 21.288(4) ? b = 93.18(2), V = 6964(2) 3, Z = 8, Dc = 1.245 g/cm3, F(000) = 2728 and m(MoKa) = 27.08 cm-1. The final R and Rw are 0.044 and 0.053 for 6765 observed reflections with I > 3.00s(I), respectively. The ytterbium atom is bonded to two terminal amide ligands with the normal YbN distances of 2.171(6) and 2.174(7) ? and two bridging amide ligands with the YbN bonds about 0.1 ?longer than those of the formers, forming a distorted tetrahedral geometry. |
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| Keywords: | lanthanide amide ytterbium crystal structure bimetallic compound |
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