Abstract
The reaction of pyridoxine with manganese sulfate in an aqueous solution gave the coordination compound MnSO4 · 2C8H11O3N · 2H2O (I). The structure of I was determined from single-crystal X-ray diffraction data. In the centrosymmetric complex (sp. gr. \(P\bar 1\), Z = 1), the Mn atom is coordinated by two pyridoxine molecules and two water molecules, thus adopting an octahedral coordination. The sulfate anion is also at a center of symmetry and, consequently, is disordered. The pyridoxine molecules are coordinated to the metal atom through the oxygen atoms of the deprotonated hydroxyl group and the CH2OH group that retains the hydrogen atom. The nitrogen atom is protonated in such a way that the heterocycle assumes a pyridinium character. The crystal structure also contains six water molecules of crystallization. A thermogravimetric study showed that the decomposition of I occurs in several successive steps, such as dehydration, the combustion of organic ligands, and the formation of an inorganic residue.
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Dedicated to the memory of N.V. Belov
Original Russian Text © N.G. Furmanova, I.A. Verin, N. Shyityeva, K.S. Sulaimankulov, Zh. Berdalieva, V.F. Resnyanskii, A.T. Duishenbaeva, 2011, published in Kristallografiya, 2011, Vol. 56, No. 6, pp. 1102–1106.
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Furmanova, N.G., Verin, I.A., Shyityeva, N. et al. Synthesis and crystal structure of the coordination compound of pyridoxine with manganese sulfate. Crystallogr. Rep. 56, 1033–1037 (2011). https://doi.org/10.1134/S1063774511060095
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DOI: https://doi.org/10.1134/S1063774511060095