3-[4-(4-Fluoro­phenyl)­piperazin-1-yl­methyl]-5-methyl-1,3-benzoxazol-2(3H)-one and 3-[4-(2-fluoro­phenyl)­piperazin-1-yl­methyl]-5-methyl-1,3-benzoxazol-2(3H)-one

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The title compounds, both C19H20FN3O2, contain essentially planar benzoxazolinone ring systems, within which the C—N bond distances and angles do not differ significantly between the two compounds. In both cases, the piperazine ring adopts an almost perfect chair conformation and the benzoxazo­l­inone ring system lies nearly perpendicular to it. The structures contain intermolecular C—H…O contacts, and the interactions between the benzoxazolinone and fluoro­phenyl­piperazine portions of the mol­ecules are segregated.

Document Type: Research Article

DOI: http://dx.doi.org/10.1107/S0108270104003269

Publication date: April 1, 2004

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