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Acta Crystallogr Sect E Struct Rep Online. 2013 Apr 20;69(Pt 5):o761. doi: 10.1107/S1600536813010131. Print 2013 May 1.

tert-Butyl 4-{5-[3-(tri-fluoro-meth-oxy)phen-yl]-1,2,4-oxa-diazol-3-yl}piperazine-1-carboxyl-ate.

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1
Department of Studies and Research in Chemistry, Tumkur University, Tumkur, Karnataka 572 103, India.

Abstract

In the title compound, C18H21F3N4O4, the piperazine ring adopts a chair conformation and the dihedral angle between the oxa-diazole and benzene rings is 6.45 (14)°. The C atoms and their attached H atoms in the piperazine ring are disordered, with site-occupation factors of 0.576 (12) and 0.424 (12). In the crystal, mol-ecules are linked through weak C-H⋯O inter-actions, generating an R 2 (2)(12) motif. Further, secondary C-H⋯O inter-molecular inter-actions link the mol-ecules into C(6) chains along [100].

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