Acta Cryst. (2008). E64, m1383-m1384  [ doi:10.1107/S1600536808031905 ]

trans-Bis(methanol-O)bis(quinoline-2-carboxylato-²N,O)manganese(II)

D. Dobrzynska and L. B. Jerzykiewicz

Abstract: The title compound, [Mn(C₁₀H₆NO₂)₂(CH₄O)₂], was obtained unintentionally as the product of an attempt to synthesize a polynuclear carboxylate bridged manganese(III/IV) complex, using methanol to reduce the permanganate ion. The molecule is centrosymmetric; the pairs of equivalent ligands coordinate trans to each other in a distorted octahedral geometry. Intramolecular C-HO bonds lying in the equatorial plane stabilize the molecule. In the crystal, molecules are linked by O-HO and C-HO hydrogen bonds, creating a three-dimensional supramolecular structure. - and C-H interactions are also observed. The dihedral angle and centroid-to-centroid distance between the pyridine ring (A) and the benzene ring (Bⁱ) of a symmetrically related molecule [symmetry code: (i) -1 - x, -y, -z] are 1.27 (11)° and 3.974 (2) Å, respectively. For the C-H interactions, the relevant distances and angles are: CCg[Aⁱⁱ] = 3.643 (2) Å, HCg[Aⁱⁱ] = 2.750 (2) Å and C-HCg[Aⁱⁱ] = 155 (1)° [symmetry code: (ii) x, -1 + y, z].

Online 11 October 2008

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