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Crystal structure of (E)-4-hy-droxy-6-methyl-3-{1-[2-(4-nitro-phen-yl)hydrazinyl-idene]eth-yl}-2H-pyran-2-one.

ABSTRACT: The title compound, C14H13N3O5 (HMNP), was synthesized by the simple condensation of p-nitro-phenyl-hydrazine with de-hydro-acetic acid (DHA) in a 1:1 molar ratio in ethanol. HMNP has been characterized by using FT-IR, 1H and 13C NMR and UV-Vis spectroscopic and single-crystal X-ray diffraction techniques. The crystal packing reveals strong hydrogen bonds between the NH group and the carbonyl O atom of di-hydro-pyran-one moiety, forming chains along [101]. The thermal stability of the synthesized compound was confirmed by thermogravimetric analysis and it was found to be stable up to 513?K. The UV-Vis spectrum shows the presence of a strong band at ?max 394?nm. 1H NMR and single-crystal X-ray analyses confirmed the presence of the enol form of the ligand and dominance over the keto form. The crystal studied was a non-merohedral twin with the refined ratio of the twin components being 0.3720?(19):0.6280?(19).

SUBMITTER: Kirandeep 

PROVIDER: S-EPMC5290570 | biostudies-literature | 2017 Feb

REPOSITORIES: biostudies-literature

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Crystal structure of (<i>E</i>)-4-hy-droxy-6-methyl-3-{1-[2-(4-nitro-phen-yl)hydrazinyl-idene]eth-yl}-2<i>H</i>-pyran-2-one.

Kirandeep   Husain Ahmad A   Negi Pooja P   Kumar Girijesh G   Kataria Ramesh R  

Acta crystallographica. Section E, Crystallographic communications 20170120 Pt 2

The title compound, C<sub>14</sub>H<sub>13</sub>N<sub>3</sub>O<sub>5</sub> (HMNP), was synthesized by the simple condensation of <i>p</i>-nitro-phenyl-hydrazine with de-hydro-acetic acid (DHA) in a 1:1 molar ratio in ethanol. HMNP has been characterized by using FT-IR, <sup>1</sup>H and <sup>13</sup>C NMR and UV-Vis spectroscopic and single-crystal X-ray diffraction techniques. The crystal packing reveals strong hydrogen bonds between the NH group and the carbonyl O atom of di-hydro-pyran-one mo  ...[more]

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