STRUCTURE OF MN(II), CO(II), NI(II), AND CU(II) COMPLEXES WITH TRIFORMYLMETHANE
E. V. Tretyakov, S. E. Tolstikov, G. V. Romanenko, A. S. Bogomyakov, R. Z. Sagdeev, V. M. Novotortsev, V. I. Ovcharenko
Keywords: manganese(II) complexes, cobalt(II) complexes, nickel(II) complexes, copper(II) complexes, 1,3-dicarbonyl compounds, X‑ray diffraction analysis
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.
|
