The title mol-ecule, C(14)H(9)ClN(2)OS, exists in the solid state in its amide form with a typical C=O bond length, as well as shortened C-N bonds. The plane containing the HNCO atoms subtends dihedral angles of 12.3 (4) and 8.1 (3)° with the planes of the phenyl ring and benzothia-zole group, respectively, whereas the dihedral angle between the planes of the phenyl ring and the benzothia-zole ...

We construct rank 2 thick nondiscrete affine buildings associated with an arbitrary finite dihedral group.

The title compound, C(12)H(7)Br(2)NO(2), a biphenyl derivative, displays a twisted conformation with the two benzene rings making a dihedral angle of 55.34 (14)°. The dihedral angle between the nitro group and its parent benzene ring is 26.8 (2)°. The crystal structure is stabilized by inter-molecular C-H⋯Br and C-H⋯O inter-actions, which lead to the formation of chains propagating along the c-...

In the structure of the title compound, C(9)H(8)N(2)O, the amide group is twisted by a dihedral angle of 21.86 (7)° with respect to the benzene ring, while the planes of the benzene ring and cyano-methyl group form a dihedral angle of 53.13 (11)°. In the crystal structure, mol-ecules are linked via N-H⋯O hydrogen bonds, forming a chain running parallel to the a axis.

The aromatic ring of the title compound, C(6)H(3)ClN(2)O(5), is almost planar (r.m.s. deviation = 0.007 Å); one nitro substituent is nearly coplanar with the ring [dihedral angle = 3(1)°], whereas the other is twisted [dihedral angle = 36 (1)°]. The phenol OH group is intra-molecularly hydrogen bonded to the nitro group that is coplanar with the ring, generating an S(6) graph-set motif.

In the title compound, C(19)H(16)O(2)S, the sulfur-bound phenyl group is approximately parallel to one of the two phenyl rings of the benzhydryl group, making a dihedral angle of 12.53 (10)°, and forms a dihedral angle of 41.25 (9)° with the other phenyl ring. In the crystal, weak C-H⋯O inter-actions form a two-dimensional network propagating along the bc plane.

Under the assumption that a defining graph of Coxeter group admits only subsequent elementary twists in $$\mathbb {Z}_2$$ or dihedral groups and is type $$\mathrm {FC}$$ , we prove Bernhard Mühlherr’s Twist Conjecture.

In the title compound, C(11)H(10)N(2)O(5), the amide group is nearly coplanar and the ester group approximately perpendicular to the vinyl C-HC=CH-C group [dihedral angles of 5.0 (2) and 88.89 (5)°, respectively]. This results in a short intra-molecular O =C⋯O=C contact of 2.7201 (17) Å between the amide O atom and the ester carbonyl C atom. The prop-2-enamide fragment and the nitro group make ...