In the title compound, C(18)H(17)N(3)O, the dihedral angle between the phenyl and benzene rings is 11.22 (14)°. Apart from the methyl H atoms, the mol-ecule is close to planar, with a maximum deviation of 0.145 (3) Å. Intra-molecular C-H⋯O and C-H⋯N inter-actions occur. In the crystal, inversion dimers linked by pairs of N-H⋯N hydrogen bonds occur, resulting in an R(2) (2)(12) ring motif. Furth...

In the title compound, C(14)H(11)FN(6)S, the 1,2,4-triazolo[3,4-b][1,3,4]thia-diazole ring system is essentially planar [maximum deviation = 0.022 (3) Å] and is inclined at dihedral angles of 15.00 (18) and 52.82 (16)° with respect to the pyrazole and phenyl rings. In the crystal, mol-ecules are linked into two-dimensional networks parallel to (100) via inter-molecular N-H⋯N and weak C-H⋯N hydr...

In the title compound, C17H12F2N2O2S2, the conformation of the dithia-cyclo-pentane ring is a half-chair, with a total puckering amplitude Q T = 0.460 (1) Å. π-π inter-actions [centroid-centroid distance = 3.585 (9) Å between the fluoro-phenyl rings of neighbouring mol-ecules] and C-H⋯N and C-H⋯O inter-actions help to stabilize the crystal structure and form ladders along the c axis.

In the title compound, C(18)H(19)NO(2), the allyl group is disordered over two sets of sites [occupancy ratio 0.662 (4):0.338 (4)]. The dihedral angle between the phenyl and benzene rings is 87.44 (10)°. The oxazinane ring adopts a sofa conformation.

In the title compound, C(28)H(20)N(2)O(10)·CHCl(3), the phen-oxy rings are inclined to the central phenyl ring at dihedral angles of 84.71 (13) and 80.56 (13)°. In the crystal, pairs of weak inter-molecular C-H⋯O hydrogen bonds link mol-ecules related by an inversion center, forming dimers. There are also C-H⋯π inter-actions present.

The title compound, C(18)H(13)N(3)O, has a butterfly-like structure, in which the pyrazole ring forms dihedral angles of 59.31 (8) and 57.24 (8)° with the two phenyl rings. The dihedral angle between the two phenyl rings is 64.03 (8)°. The pyrazole ring and the C-C=O plane of the acetyl group are twisted slightly, making a dihedral angle of 7.95 (18)°. In the crystal, mol-ecules are linked thro...

We demonstrate that strong laser pulses can induce torsional motion in a molecule consisting of a pair of phenyl rings. A nanosecond laser pulse spatially aligns the carbon-carbon bond axis, connecting the two phenyl rings, allowing a perpendicularly polarized, intense femtosecond pulse to initiate torsional motion accompanied by an overall rotation about the fixed axis. We monitor the induced ...

The title compound, C(17)H(15)N(3)O(3), was prepared from 1-(2-nitro-phen-yl)-3-phenyl-prop-2-en-1-one and hydrazine. The dihedral angle between the benzene and phenyl rings is 74.55 (2)°. The pyrazoline ring is in a slight envelope conformation with the C atom bonded to the phenyl ring forming the flap. In the crystal structure, weak inter-molecular C-H⋯O hydrogen bonds connect mol-ecules into...

In the title compound, C(17)H(12)F(2)N(2)OS, the planar thia-zole ring (r.m.s. deviation = 0.012 Å) makes dihedral angles of 15.08 (9) and 81.81 (6)° with the 4-fluoro-phenyl and 2-fluoro-phenyl rings, respectively. The 2-fluoro-phenyl ring is disordered over two orientations with site-occupancy factors of 0.810 (3) and 0.190 (3). The structure contains inter-molecular C-H⋯O hydrogen bonds.

The mol-ecular structure of the title compound, [Fe(C9H6BrS)(C13H7F6)], consists of a ferrocene backbone with a bis-(tri-fluoro-meth-yl)phenyl group at one cyclo-penta-dienyl ring and a thio-phene heterocycle at the other cyclo-penta-dienyl ring. The latter is disordered over two sets of sites in a 0.6:0.4 ratio. In the crystal structure, intra-molecular π-π inter-actions between the thienyl an...