Title
A pair of chiral Cu(II)-Tb(III)-Fe(III) heterotrimetallic enantiomers: Structural, luminescent, and magnetic studies
Author
Zi-Xuan Wang, Ya-Nan Yuan, Qing-Lun Wang, Qi Wang Xiang-Jian Meng, Chun Yang
Year
2021
Journal
Journal of the Chinese Chemical Society
Abstract
One chiral heterotrimetallic compound, [Cu(H2O){(R,R)-valcy}Tb(CH3OH)2(H2O)(μ-CN)Fe(CN)5]·[Cu(H2O){(R,R)-valcy}Tb(CH3OH)1.5(H2O)1.5(μ-CN)Fe(CN)5]·7.85H2O·2CH3OH (1) (H2(R,R)-valcy = N,N′-bis(3-methoxysalicylidene)-1R,2R-1,2-diaminocyclohexane), has been prepared and structurally characterized by X-ray single-crystal diffraction. In 1, the asymmetric trinuclear {CuIITbIIIFeIII} units are assembled into 1-D supramolecular single chain by hydrogen-bonds and the supramolecular chains are further connected into 2D sheets. Magnetic studies show overall weak ferromagnetic interaction and magnetic anisotropy. The enantiomer of 1, denoted as complex 2, derived from N,N′-bis(3-methoxysalicylidene)-1S,2S-1,2-diaminocyclohexane was also synthesized and characterized by PXRD, Infrared spectra, CD spectra, and fluorescence spectra. The results indicated that complexes 1 and 2 are isomorphous exhibiting similar fluorescence properties.
Instrument
J-715
Keywords
chiral, fluorescence property, CD, heterotrimetallic compounds