Acta Cryst. (2007). E63, m1551  [ doi:10.1107/S1600536807020466 ]

catena-Poly[[trans-diaquamanganese(II)]-di--3-pyridylacetato]

S.-N. Qin, F.-P. Liang, Z.-L. Chen and Y.-L. Cai

Abstract: The title manganese(II) coordination polymer, [Mn(C₇H₆NO₂)₂(H₂O)₂]_n, which was obtained from a solvothermal reaction of 3-pyridylacetic acid hydrochloride with Mn(ClO₄)₂·6H₂O, is centrosymmetric, so pairs of equivalent ligands lie trans to each other in a slightly distorted octahedral geometry such that the Mn^II center is coordinated by two pyridyl N atoms [Mn-N = 2.287 (4) Å], two carboxylate O atoms [Mn-O = 2.129 (3) Å] and two water molecules [Mn-O = 2.179 (3) Å]. Each unit is further extended into two-dimensional sheets with a rhombic grid through sharing Mn^II ions, 3-pyridylacetate anionic ligands and intramolecular O-HO hydrogen bonds with angles at hydrogen of 147°. Adjacent two-dimensional layers are connected via intermolecular O-HO and weak C-HO hydrogen-bonding contacts, resulting in a three-dimensional framework with oxygen as a trifurcated acceptor atom.

Online 30 April 2007

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