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題名 | Synthesis, Crystal Structure and Magnetic Properties of Zinc(Ⅱ) Chloride Complexes with Pyridyl-substituted Nitronyl Nitroxides= |
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作者 | 李綺縑; 魏和祥; 李錦祥; 王瑜; Lee, Chin-jhan; Wei, Ho-hsiang; Lee, Gene-hsiang; Wang, Yu; |
期刊 | Journal of the Chinese Chemical Society |
出版日期 | 20010800 |
卷期 | 48:4 2001.08[民90.08] |
頁次 | 頁717-722 |
分類號 | 346.01 |
語文 | eng |
關鍵詞 | Molecular magnetism; Crystal structure; Organic radicals; Nitronyl nitroxides; Magnetic properties; |
英文摘要 | ZnCl2(NIT-pPy) 1, (NIT-pPy = 2-(4-pyridyl)-4,4,5,5-tetramethyl-4,5-dihydro-1H-imidazolyl-1-oxyl-3-oxide) crystallizes in the orthorhombic space group Pnn2 with the cell parameters a = 9.4083(9), b = 39.686(3), c = 7.4417(14) A. ZnCl2(NIT-6M-oPy) 2, (NIT-6M-oPy = 2-(6-methyl-2-pyridyl)-4,4,5,5-tetramethyl-4,5-dihydro-1H-imidazolyl-1-oxyl-3-oxid e) crystallizes in the monoclinic space group Pn with a = 7.377(2), b = 19.096(4), c = 11.853(2) A, b = 95.65(3)°. The temperature dependence magnetic susceptibility of complex 1 revealed an intermolecular ferromagnetic exchange interaction. A simple spin-polarization model has been used to justify the observed ferromagnetic exchange interaction between the spins of the radical NO group in complex 2. |
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