Received 26 March 2013
aDepartment of Studies and Research in Chemistry, Tumkur University, Tumkur, Karnataka 572 103, India,bDepartment of Physics, Governament First Grade College K.R. Pete, Karnataka 571 426, India,cDepartment of Studies and Research in Chemistry, U.C.S., Tumkur University, Tumkur, Karnataka 572 103, India, and dDepartment of Studies and Research in Physics, U.C.S., Tumkur University, Tumkur, Karnataka 572 103, India
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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-HO interactions, generating an R22(12) motif. Further, secondary C-HO intermolecular interactions link the molecules into C(6) chains along .
Data collection: APEX2 (Bruker, 2009); cell refinement: APEX2 and SAINT-Plus (Bruker, 2009); data reduction: SAINT-Plus and XPREP (Bruker, 2009); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: Mercury (Macrae et al., 2008); software used to prepare material for publication: SHELXL97.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: BT6899 ).
The authors thank Dr S. C. Sharma, Vice Chancellor, Tumkur University, for his constant encouragement and Professor T. N. Guru Row and Vijith Kumar, Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore, for their help and valuable suggestions. BSPM thanks Dr H. C. Devarajegowda, Department of Physics, Yuvarajas College (constituent), University of Mysore, for his guidance.
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