Synthesis and structure of low-coordinate lanthanide(iii) complexes with a 1,8-dibromocarbazolide ligand

IF 1.7 4区化学 Q3 CHEMISTRY, MULTIDISCIPLINARY

Russian Chemical Bulletin Pub Date : 2025-07-10 DOI:10.1007/s11172-024-4662-3

H. Zakaria, D. M. Lyubov, Yu. V. Nelyubina, A. A. Trifonov

引用次数: 0

Abstract

Rare-earth metal tris(carbazolide) complexes [Ln(NC₁₂H₄-3,6-Bu^t₂-1,8-Br₂)₃] (Ln = Y, Tb, Dy, Ho) were synthesized by the alkane elimination starting from 1,8-dibromo-3,6-di-tert-butyl-9H-carbazole (3,6-Bu^t₂-1,8-Br₂CarbH) and [Ln(CH₂SiMe₃)₃(THF)₂] in a molar ratio of 3: 1. According to the X-ray diffraction analysis, the complexes [Ln(NC₁₂H₄-3,6-Bu^t₂-1,8-Br₂)₃] contain formally three-coordinate Ln atoms and crystallize as racemates consisting of equal amounts of Δ and Λ enantiomers, differing in the direction of inclination of the carbazolide planes with respect to the plane formed by the nitrogen atoms of three carbazolide ligands.

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1,8-二溴咔唑啉低配位镧系（iii）配合物的合成与结构

以1,8-二溴-3,6-二叔丁基- 9h -咔唑（3,6-丁- 2-1,8- br2carbh）和[Ln(CH2SiMe3)3(THF)2]为原料，摩尔比为3:1，通过烷烃消元法合成稀土金属三（咔唑烷）配合物[Ln(NC12H4-3,6-But2-1,8-Br2)3] （Ln = Y, Tb, Dy, Ho）。根据x射线衍射分析，配合物[Ln(NC12H4-3,6-But2-1,8-Br2)3]含有形式三配位的Ln原子，结晶为外消旋体，由等量的Δ和Λ对映体组成，卡唑烷平面相对于三种卡唑烷配体的氮原子形成的平面的倾斜方向不同。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Russian Chemical Bulletin 化学-化学综合

CiteScore

2.70

自引率

47.10%

发文量

257

审稿时长

3-8 weeks

期刊介绍： Publishing nearly 500 original articles a year, by leading Scientists from Russia and throughout the world, Russian Chemical Bulletin is a prominent international journal. The coverage of the journal spans practically all areas of fundamental chemical research and is presented in five sections: General and Inorganic Chemistry; Physical Chemistry; Organic Chemistry; Organometallic Chemistry; Chemistry of Natural Compounds and Bioorganic Chemistry.