Water-Stable Manganese(IV) Complex of a N2O4-Donor Non-Schiff-Base Ligand: Synthesis, Structure, and Multifrequency High-Field Electron Paramagnetic Resonance Studies

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• 作者：Malay Dolai ; Asma Amjad ; Mainak Debnath ; Johan van Tol ; Enrique del Barco ; Mahammad Ali
• 刊名：Inorganic Chemistry
• 出版年：2014
• 出版时间：June 2, 2014
• 年：2014
• 卷：53
• 期：11
• 页码：5423-5428
• 全文大小：329K
• 年卷期：v.53,no.11(June 2, 2014)
• ISSN：1520-510X

文摘

A novel water-stable (t_1/2 6.8 days) mononuclear manganese(IV) complex of a hexacoordinating non-Schiff-base ligand (H₄L) with N₂O₄-donor atoms has been synthesized and characterized crystallographically. High-frequency electron paramagnetic resonance experiments performed on a single crystal reveal a manganese(IV) ion with an S = ³/₂ ground spin state that displays a large single-ion anisotropy, setting the record of mononuclear manganese(IV) complexes reported so far. In addition, spin鈥揺cho experiments reveal a spin鈥搒pin relaxation time T₂ 500 ns.