Synthesis and structural characterization of metal complexes with macrocyclic tetracarbene ligands

被引:17
作者
Fei, Fan [1 ]
Lu, Taotao [1 ]
Chen, Xue-Tai [1 ]
Xue, Zi-Ling [2 ]
机构
[1] Nanjing Univ, Sch Chem & Chem Engn, State Key Lab Coordinat Chem, Nanjing 210023, Jiangsu, Peoples R China
[2] Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA
基金
美国国家科学基金会;
关键词
N-HETEROCYCLIC-CARBENE; DICARBENE BUILDING-BLOCKS; TETRAIMIDAZOLIUM SALTS; COORDINATION CHEMISTRY; CATALYTIC APPLICATIONS; MOLECULAR SQUARE; NHC LIGANDS; HEME ANALOG; PI-PI; AU-I;
D O I
10.1039/c7nj02485a
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Fourteen Ag(I), Au(I), Ni(II), Pd(II), and Pt(II) complexes with macrocyclic tetradentate N-heterocyclic carbene (NHC) ligands were prepared via reactions between three macrocyclic tetrabenzimidazolium salts and metal precursors. All except two Au complexes were characterized using single-crystal X-ray diffraction. Three different structures, including a trinuclear one containing a NHC-Ag-(H2O) moiety and a hexanuclear propeller-like supramolecular assembly, are found for Ag-NHC complexes. Nine complexes of group 10 metal ions adopt square-planar geometry, in which the different ring-sizes of the macrocyclic tetracarbene ligands lead to a variation of metal-carbene bond lengths. pi-pi stackings are observed between the rigid aromatic benzimidazole rings in the nickel group complexes.
引用
收藏
页码:13442 / 13453
页数:12
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