Bandrehalli Siddagangaiah Palakshamurthy

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In the title compound, C7H4F2O3, an intra-molecular O-H⋯O hydrogen bond is observed. In the crystal, inversion dimers linked by pairs of O-H⋯O hydrogen bonds generate R 2 (2)(8) ring motifs. These dimers are linked by C-H⋯O and C-H⋯F hydrogen bonds, forming sheets lying parallel to (30-1). The sheets are linked by aromatic π-π stacking inter-actions(More)
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(More)
In the title compound, C15H15NO4S, the dihedral angle between the benzene rings is 78.62 (16)°. In the crystal, adjacent mol-ecules are linked along the c axis into C(4) chains through strong N-H⋯O hydrogen bonds. Mol-ecules are further connected through C-H⋯O hydrogen bonds into a hexa-meric unit generating an R (6) 6(66) motif. Another C-H⋯O inter-action(More)
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