Aromatic Dicupra[10]annulenes

被引:78
作者
Wei, Junnian
Zhang, Yongliang
Chi, Yue
Liu, Liang
Zhang, Wen-Xiong
Xi, Zhenfeng [1 ]
机构
[1] Peking Univ, Coll Chem, Key Lab Bioorgan Chem & Mol Engn, BNLMS,Minist Educ, Beijing 100871, Peoples R China
关键词
STRUCTURAL-CHARACTERIZATION; ORGANOMETALLIC-CHEMISTRY; COPPER(I) COMPLEXES; TRANSITION-METAL; METALLABENZYNES; LIGANDS; STABILIZATION; OSMAPENTALENE; SUBSTITUENTS; IRIDABENZENE;
D O I
10.1021/jacs.5b11317
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Metal-containing aromatic systems (metal-la-aromatics) are unique and important both experimentally and theoretically. Among metalla-aromatics, six-membered metallabenzenes and metallabenzynes have attracted much attention in recent years. However, reports on their superior homologues are rare. In this work, the first series of aromatic dicupra[10]annulenes were isolated from the reaction of dilithio reagents and copper salts. Single-crystal X-ray structural analysis revealed dicupra[10]annulenes with averaged bond lengths. Li-7 NMR spectra and theoretical calculations revealed considerable aromatic character. XPS data suggested that the oxidation state of Cu atom in dicupra[10]annulenes was more likely to be Cu(I), indicating that the dilithio moieties in dicupra[10]annulenes participated as noninnocent ligands. This work demonstrates a novel approach to construct macrocyclic metalla-aromatics.
引用
收藏
页码:60 / 63
页数:4
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