Europium complexes with 1,2-bis(arylimino)acenaphthenes: a search for redox isomers

被引：26
|
作者：
Fedushkin, I. L. [1 ]
Skatova, A. A. [1 ]
Yambulatov, D. S. [1 ]
Cherkasov, A. V. [1 ]
Demeshko, S. V. [2 ]
机构：
[1] Russian Acad Sci, GA Razuvaev Inst Organometall Chem, Nizhnii Novgorod 603950, Russia
[2] Univ Gottingen, Inst Inorgan Chem, D-37077 Gottingen, Germany
来源：
RUSSIAN CHEMICAL BULLETIN | 2015年 / 64卷 / 01期
基金：
俄罗斯基础研究基金会;
关键词：
europium; diimines; molecular structure; magnetic properties; LIGANDS;
D O I：
10.1007/s11172-015-0817-6
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Reduction of 1,2-bis[(2,6-diisopropylphenyl)imino]acenaphthene (dpp-bian, 1) with metallic europium in 1,2-dimethoxyethane (dme) under anaerobic conditions gave a europium(II) complex with the acenaphthene-1,2-diimine dianion, (dpp-bian)Eu(dme)(2) (4), in high yield. Oxidation of complex 4 with triphenyltin chloride or 1,2-dibromostilbene afforded the corresponding halogen derivatives [(dpp-bian)Eu(A mu-Cl)(dme)](2) (5) and [(dpp-bian)Eu(A mu-Br)(dme)](2) (6). The molecular structures of complexes 4-6 were determined by X-ray diffraction. The magnetic moments of complexes 5 and 6 remain constant over a temperature range from 25 to 295 K; they are indicative of the presence of the europium(II) ion and the dpp-bian radical anion in both the complexes.
引用
收藏
页码：38 / 43
页数：6
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