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

IF 1.1 3区化学 Q4 CHEMISTRY, INORGANIC & NUCLEAR Russian Journal of Coordination Chemistry Pub Date : 2024-05-16 DOI:10.1134/S1070328423601437

A. Yu. Konokhova, M. Yu. Afonin, T. S. Sukhikh, S. N. Konchenko

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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.

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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

Russian Journal of Coordination Chemistry 化学-无机化学与核化学

CiteScore

2.40

自引率

15.80%

发文量

审稿时长

7.2 months

期刊介绍： Russian Journal of Coordination Chemistry is a journal that publishes reviews, original papers, and short communications on all aspects of theoretical and experimental coordination chemistry. Modern coordination chemistry is an interdisciplinary science that makes a bridge between inorganic, organic, physical, analytical, and biological chemistry.