Diamidophosphine as a Precursor of the Iminophosphonamidinate Ligand in the Yttrium Complex

IF 16.4 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
A. Yu. Konokhova, M. Yu. Afonin, T. S. Sukhikh, S. N. Konchenko
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引用次数: 0

Abstract

Diamidophosphine tBuP(NHMes)2(H2L) is synthesized by the treatment of tBuPCl2 with two equivalents of KNHMes (Mes is 2,4,6-Me3C6H2). The reaction of H2L with potassium hydride in THF (THF is tetrahydrofuran) affords the anionic form HL with the hydrogen atom migrating from nitrogen to phosphorus, which is confirmed by the 1H and 31P NMR data. The structure of the formed iminophosphonamidinate anion HL is determined by X-ray diffraction (XRD) in the crystalline phase of K[K(THF)2](tBuPH(NMes)2)2∙C7H8 (KHL). The reaction of KHL with yttrium chloride gives complex [Y(tBuPH(NMes)2)2Cl] ([Y(HL)2Cl]) in which, according to the XRD data, ligands HL are in the iminophosphonamidinate PH form. The 1H and 31P NMR spectra confirm that this structure of the complex exists in the solution.

Abstract Image

Abstract Image

作为钇络合物中氨基膦酰胺配体前体的二脒膦
摘要 二脒基膦 tBuP(NHMes)2(H2L)是由 tBuPCl2 与两个当量的 KNHMes(Mes 为 2,4,6-Me3C6H2)处理合成的。H2L 与氢化钾在 THF(THF 为四氢呋喃)中反应生成阴离子形式的 HL-,氢原子从氮转移到了磷,1H 和 31P NMR 数据证实了这一点。通过 X 射线衍射 (XRD),确定了 K[K(THF)2](tBuPH(NMes)2)2∙C7H8 (KHL)结晶相中形成的亚氨基膦酰阴离子 HL- 的结构。KHL 与氯化钇反应得到[Y(tBuPH(NMes)2)2Cl]([Y(HL)2Cl])复合物,根据 XRD 数据,配体 HL- 以亚氨基膦酰胺 PH 形式存在。1H 和 31P NMR 光谱证实了这种结构的复合物存在于溶液中。
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来源期刊
Accounts of Chemical Research
Accounts of Chemical Research 化学-化学综合
CiteScore
31.40
自引率
1.10%
发文量
312
审稿时长
2 months
期刊介绍: Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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