Abstract
Two energetic catalysts, 3,5-dinitro-2-pyridonate of lead (II) (Pb(2DNPO)2, 1) and 3,5-dinitro-4-pyridone-N-hydroxylate tetrahydrate of copper (II) (Cu(4DNPOH)2(H2O)4, 2) were characterized by elemental analysis, FT-IR, TG-DSC and structurally characterized by X-ray single-crystal diffraction analysis. X-ray powder diffraction analysis of complex 1 confirmed the phase homogeneity of the polycrystalline sample. Crystal data for 1: monoclinic, space group P 21/n, a = 8.5253(9), b = 9.2938(10), c = 19.654(2) Å, β = 102.289(2)°, V = 1521.6(3) Å3, Z = 4; 2: monoclinic, space group P 21/n , a = 8.3705(10), b = 9.9307(12), c = 10.5771(12) Å, β = 98.021(2)°, V = 870.62(18) Å3, Z = 2. The complex 1 is a one-dimensional coordination polymer with each Pb(II) atom being six-coordinated, forming a heavily distorted octahedral geometry, by two nitrogen and four oxygen donors. Each ligand links the Pb(II) ions in a chelating bridging mode using nitrogen and oxygen atoms of its pyridonate part. The complex 2 is a copper (II) complex with a compressed octahedral geometry. The Cu(II) atom locates on the equatorial positions defined by oxygen atoms of four water molecules. Its axial positions are filled with two oxygen donors of the pyridine-N-hydroxylate moieties of two ligands. The abundant hydrogen bonds link the molecules into one-dimensional chains. Both the complexes represent the first two examples of the energetic catalysts containing dinitropyridine derivatives characterized crystallographically
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We thank the Postgraduate-Innovation-Foundation of Shaanxi Normal University and the Combustion Key Laboratory of Xi’an Modern Chemistry Research Institute for financial support.
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She, JB., Zhang, GF., Zhao, FQ. et al. The first two structurally characterized energetic catalysts derived from dinitropyridone. Struct Chem 18, 373–378 (2007). https://doi.org/10.1007/s11224-007-9179-5
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DOI: https://doi.org/10.1007/s11224-007-9179-5