Synthesis and Crystal Structure of 3-Nitrophthalic Acid 3-methyl-4-nitropyridine N-Oxide Adducts

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The title compound, a 1:1 molecular adduct of 3-nitrophthalic acid and 3-methyl-4-nitropyridine N-oxide (PPOM), has been synthesized and characterized by X-ray single-crystal structure analysis. It crystallizes in triclinic, space group P-1 with a = 7.6076(15), b = 7.8180(16), c= 14.546(3) (A), α= 93.90(3), β = 97.21(3), γ= 114.43(3)°, C14H11N3O9, Mr = 365.26,Z=2,V=774.6(3) (A)3, Dc = 1.566 g/m3, u(MoKα) = 0.134 mm-1, F(000) = 376, R = 0.0538 and Wr = 0.1460 for 885 observed reflections (I>2σ(I)). The protons of the carbonylic acids in the molecule are not transferred and the O-H…O and C-H…O hydrogen bonds form zigzag chains in the molecule.
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