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metal-organic compounds
The CuII centre in the title compound, [Cu(C3H5O2)2(C7H8N2O2)2].0.25H2O, is situated on an inversion centre and has tetragonally distorted coordination. It is bonded in a trans-square-planar arrangement to the pyridyl N atoms of two methyl 3-pyridylcarbamate molecules [Cu—N1 2.025 (2) Å] and one carboxylate O atom from each of two propionate anions [Cu—O1 1.955 (2) Å]. The axial positions are occupied by the other propionate O atoms [CuO2 2.653 (2) Å]. The propionate groups exhibit very small O1—CuO2 chelate angles of 54.23 (8)°.