Unprecedented Fluorescent Dinuclear CoII and ZnII Coordination Compounds with a Symmetric Bis(salamo)-Like Tetraoxime

Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry
Lin-Wei ZhangWen-Kui Dong

Abstract

Two unprecedented homometallic CoII and ZnII coordination compounds, [M₂(L)(OCH₃)][M₂(L)(OAc)] (MII = CoII (1) and ZnII (2)), with a novel symmetric bis(salamo)-like tetraoxime ligand H₃L were synthesized and characterized by elemental analyses, infrafred (IR), ultraviolet⁻visible spectroscopy (UV-Vis), fluorescent spectra and single-crystal X-ray diffraction analyses. The unit cell of the two coordination compounds contains two crystallographically and chemically independent dinuclear coordination compounds. In the two coordination compounds, three metal ions are five-coordinated, formed two square pyramidal and a trigonal bipyramidal geometries, and the other metal ion is a hexacoordinate octahedral configuration. In addition, the coordination compound 1 forms a 3D supramolecular structure, and the coordination compound 2 forms a 0D dimer structure by the inter-molecular hydrogen bond interactions. Meanwhile, the fluorescence spectra of the coordination compounds 1 and 2 were also measured and discussed.

References

Jan 20, 2005·Chemistry : a European Journal·David CasanovaSantiago Alvarez
Feb 26, 2005·The Journal of Organic Chemistry·Shigehisa AkineTatsuya Nabeshima
Jun 25, 2014·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·Wen-Kui DongXiu-Yan Dong
Sep 18, 2017·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·Fei WangYu-Jie Ding

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Citations

Jul 3, 2020·Journal of Fluorescence·Yun-Dong PengLi Wang
Dec 22, 2020·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·Lu-Mei PuXiu-Yan Dong

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Methods Mentioned

BETA
fluorescence titration
X-ray

Software Mentioned

SHELXS
PLATON

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