Structure of Mn(II), Co(II), Ni(II), and Cu(II) complexes with triformylmethane |
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| Authors: | E. V. Tretyakov S. E. Tolstikov G. V. Romanenko A. S. Bogomyakov R. Z. Sagdeev V. M. Novotortsev V. I. Ovcharenko |
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| Affiliation: | 11014. International Tomography Center, Siberian Division, Russian Academy of Sciences, Novosibirsk, Russia
21014. N. S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
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| Abstract: | Previously unknown [ML2(H2O) n ] bischelates, where M is Mn(II), Co(II), Ni(II), or Cu(II) and L is deprotonated triformylmethane, are studied by X-ray diffraction analysis. It is revealed that in the crystals of all compounds there are multiple hydrogen bonds linking bischelate molecules into polymer layers or a single framework. The character of the temperature dependence of the effective magnetic moment [ML2(H2O) n ] indicates the existences of weak intracrystalline exchange interactions between the unpaired electrons of the paramagnetic centers. |
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