Acta Crystallographica Section E

Structure Reports Online

Volume 69, Part 5 (May 2013)

organic compounds

Acta Cryst. (2013). E69, o761    [ doi:10.1107/S1600536813010131 ]

tert-Butyl 4-{5-[3-(tri­fluoro­meth­oxy)phen­yl]-1,2,4-oxa­diazol-3-yl}piperazine-1-carboxyl­ate

S. Sreenivasa, K. E. ManojKumar, A. Kempaiah, P. A. Suchetan and B. S. Palakshamurthy

Abstract: In the title compound, C18H21F3N4O4, the piperazine ring adopts a chair conformation and the dihedral angle between the oxa­diazole 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, mol­ecules are linked through weak C-H...O inter­actions, generating an R22(12) motif. Further, secondary C-H...O inter­molecular inter­actions link the mol­ecules into C(6) chains along [100].

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