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1.  {5-Methyl-1-[8-(trifluoro­meth­yl)quinolin-4-yl]-1H-1,2,3-triazol-4-yl}(morpholino)methanone 
In the title mol­ecule, C18H16F3N5O2, the dihedral angle between the pyridine ring and the fused benzene ring is 4.50 (10)°. The triazole ring makes dihedral angles of 54.48 (12) and 57.91 (11)° with the pyridine and benzene rings, respectively. The morpholine ring atoms are disordered over two positions; the site-occupancy factors are ca 0.53 and 0.47. Inter­molecular C—H⋯F hydrogen bonding is found in the crystal structure. Furthermore, C—H⋯O and C—H⋯N intra­molecular contacts are also present.
doi:10.1107/S1600536808037562
PMCID: PMC2959961  PMID: 21581347
2.  1-[3-(2,4-Dichloro-5-fluoro­phen­yl)-5-(3-methyl-2-thien­yl)-4,5-dihydro-1H-pyrazol-1-yl]ethanone 
In the title mol­ecule, C16H13Cl2FN2OS, the dihedral angle between the thio­phene and benzene rings is 80.34 (12)°. The pyrazoline ring is in an envelope conformation, and the plane through the four coplanar atoms makes dihedral angles of 85.13 (9) and 6.89 (10)° with the thio­phene and benzene rings, respectively. The C and O atoms of the acetyl group are nearly coplanar with the attached pyrazoline ring. In the crystal structure, inversion dimers arise from pairs of inter­molecular C—H⋯O hydrogen bonds. A short inter­molecular Cl⋯S contact of 3.4250 (13) Å is also found.
doi:10.1107/S1600536808033837
PMCID: PMC2959565  PMID: 21581020
3.  (E)-3-(4-Fluoro­phen­yl)-1-[4-(methyl­sulfan­yl)phen­yl]prop-2-en-1-one 
In the title mol­ecule, C16H13FOS, the dihedral angle between the two benzene rings is 8.68 (6)°. The H atoms of the central enone group are trans and one H atom is involved in a close intra­molecular C—H⋯O contact. The crystal structure is stabilized by weak C—H⋯π inter­actions.
doi:10.1107/S1600536808032807
PMCID: PMC2959522  PMID: 21580981

Results 1-3 (3)