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In the crystal structure of the title compound, [Mn(C5H7O2)2(NCS)(C5H5N)], the Mn3+ cation is coordin­ated by two acetyl­acetonate anions, one terminal thio­cyanate anion and one pyridine ligand within a slightly distorted octa­hedron. The asymmetric unit consists of half a complex mol­ecule with the Mn3+ cation, the thio­cyanate anion and the pyridine ligand located on a mirror plane. The acetyl­acetonate anion is in a general position. The title compound was previously described [Stults et al. (1975). Inorg. Chem. 14, 722–730] but could only be obtained as a powder. Suitable crystals have now been obtained for a high-precision single-crystal structure determination.

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In the title compound, C9H11N3S, there is an intra­molecular O—H...O hydrogen bond involving the OH group and the adjacent methoxy O atom. The mol­ecule is essentially planar, with the maximum deviation from the mean plane of the non-H atoms being 0.1127 (14) Å for the methyl C atom. In the crystal, mol­ecules are connected via centrosymmetric pairs of N—H...S and O—H...O hydrogen bonds into a two-dimensional network parallel to (10-3).
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