Synthesis and structures of Ln(III) 12-crown-4 complexes (Ln = La, Ce, Nd)

IF 2.4 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Polyhedron Pub Date : 2025-04-01 DOI:10.1016/j.poly.2025.117528

Miao He , Ziyi Gu , Jun Li , Yangjuan Li , Yu Gong

引用次数: 0

Abstract

Two half-sandwich type mononuclear Ln(III) crown ether complexes, Ln(12-crown-4)(CH₃CN)I₃ (Ln = La(1), Ce(2)), and three sandwich type mononuclear Ln(III) crown ether complexes, [Ln(12-crown-4)₂(CH₃CN)I]I₂ (Ln = La(3), Ce(4)), [Nd(12-crown-4)₂I]I₂(CH₃CN) (5), have been prepared via the reaction of LnI₃ with 12-crown-4 in different ratios in CH₃CN at room temperature. All complexes were characterized by single crystal X-ray diffraction, IR spectroscopy, elemental analysis and NMR spectroscopy. The ¹H NMR spectrum analysis indicates that complexes 3, 4 and 5 undergo partial decomposition in solution. In addition, the ¹H NMR spectra of cerium and neodymium complexes compared to the lanthanum complexes show significant paramagnetic shifts.

Abstract Image

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

来源期刊

Polyhedron 化学-晶体学

CiteScore

4.90

自引率

7.70%

发文量

515

审稿时长

2 months

期刊介绍： Polyhedron publishes original, fundamental, experimental and theoretical work of the highest quality in all the major areas of inorganic chemistry. This includes synthetic chemistry, coordination chemistry, organometallic chemistry, bioinorganic chemistry, and solid-state and materials chemistry. Papers should be significant pieces of work, and all new compounds must be appropriately characterized. The inclusion of single-crystal X-ray structural data is strongly encouraged, but papers reporting only the X-ray structure determination of a single compound will usually not be considered. Papers on solid-state or materials chemistry will be expected to have a significant molecular chemistry component (such as the synthesis and characterization of the molecular precursors and/or a systematic study of the use of different precursors or reaction conditions) or demonstrate a cutting-edge application (for example inorganic materials for energy applications). Papers dealing only with stability constants are not considered.