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Figure 2
The crystal structure and hydrogen-bonding scheme for (I[link]), showing (a) hydro­gen-bonded rings centred on inversion centres, (b) the pyridone mol­ecules linked to the hydrogen-bonded ribbons of the acid mol­ecules and (c) a packing diagram viewed along the a direction, showing the N—H⋯O, O—H⋯O and C—H⋯O hydrogen bonds (symmetry codes are as in Table 2[link]).

Journal logoSTRUCTURAL
CHEMISTRY
ISSN: 2053-2296
Volume 60| Part 10| September 2004| Pages o718-o722
doi:10.1107/S0108270104019201
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