Construction of half-sandwich multinuclear complexes including tunnel architectures via C–H-activation-directed assembly. Issue 23 (24th May 2018)

• Record Type: Journal Article
• Authors: Guo, Bei-Bei; Gao, Wen-Xi; Lin, Yue-Jian; Jin, Guo-Xin
• Is Part Of: Dalton transactions. Volume 47:Issue 23(2018)
• Page Start: 7701
• Page End: 7708
• Publication Date: 2018-05-24
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/c8dt01140k
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : Half-sandwich bi-, tetra-, hexa- and octanuclear complexes were prepared via C–H-activation-directed assembly based on three aromatic ligands. A series of tunnel architectures were observed in the complexes, with guest molecules in certain parts. Abstract : Three aromatic ligands containing carboxyl- or nitrogen-substituted groups were employed in the construction of half-sandwich complexes via C–H activation-directed assembly, leading to the construction of eleven multinuclear organometallic iridium or rhodium complexes, including those of bi-, tetra-, hexa- and octanuclear, under mild conditions, with the help of N-donor linkers. These complexes were characterized by proton NMR, IR spectroscopy, elemental analysis, electrospray ionization (ESI) mass spectrometry and single-crystal X-ray diffraction analysis. In these complexes, two complexes were observed to exist as isomers, and several racemic enantiomers can be found. X-ray crystal structure determinations show that a series of supramolecular tunnel architectures are formed by stacking through hydrogen-bond interactions, and solvent or trifluoromethylsulfonate anion guests were found to be located in certain parts of the channels. This work represents the first successful construction of octanuclear half-sandwich complexes based on the cleavage of C–H bonds.