A pair of chiral Cu(II)‐Tb(III)‐Fe(III) heterotrimetallic enantiomers: Structural, luminescent, and magnetic studies

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‐r...

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Bibliographic Details
Published in:Journal of the Chinese Chemical Society (Taipei) 2021-11, Vol.68 (11), p.2177-2184
Main Authors: Wang, Zi‐Xuan, Yuan, Ya‐Nan, Wang, Qing‐Lun, Wang, Qi, Meng, Xiang‐Jian, Yang, Chun
Format: Article
Language:English
Subjects:
Chains
compartmental Schiff base
Crystal structure
Enantiomers
Ferromagnetism
Fluorescence
heterotrimetallic complex
Infrared spectra
Magnetic anisotropy
magnetic property
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Summary: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. Complex 1, a chiral CuIITbIIIFeIII heterotrimetallic compound derived from H2(R,R)‐valcy, has been prepared and structurally characterized by X‐ray single‐crystal diffraction. Magnetic studies show overall weak ferromagnetic interaction and magnetic anisotropy. Complexes 1 and 2 (enantiomer of 1) are isomorphous exhibiting similar fluorescence properties.
ISSN:0009-4536
2192-6549
DOI:10.1002/jccs.202100228