ABSTRACT
In the title compound, C22H16Br2O2, which has approximate non-crystallographic inversion symmetry, the dihedral angles between the central ring and the pendant rings are 89.1â (4) and 82.4â (3)°; the dihedral angle between the pendant rings is 12.1â (4)°. In the crystal, the packing is influenced by van der Waals forces and no aromatic π-π stacking is observed.
ABSTRACT
The title compound, C(16)H(17)N, is a carbazole derivative that has been designed and synthesized as a potential organic electronic device, such as an OLED. The tricyclic aromatic ring system is essentially planar, the two outer rings making a dihedral angle of 4.8â (1)°. No classical hydrogen bonds are observed in the crystal structure.
ABSTRACT
In the mol-ecule of the title compound, C(11)H(13)BrO, the adjacent C atoms are almost coplanar with the aromatic ring [maximum deviation 0.035â (3)â Å]. In the crystal structure, weak inter-molecular C-Hâ¯O inter-actions link the mol-ecules into chains along the b axis. A very weak C-Hâ¯π inter-action is also present.
ABSTRACT
The asymmetric unit of the title compound, C(8)H(4)Br(2)O(4)·2H(2)O, contains one half-mol-ecule of 2,5-dibromo-terephthalic acid (DBTA) and one water mol-ecule. The DBTA mol-ecule is centrosymmetric. In the crystal structure, inter-molecular O-Hâ¯O hydrogen bonds link the mol-ecules, forming a three-dimensional framework.
ABSTRACT
In the title compound, C(15)H(12)O(3)·H(2)O, the two rings are oriented at a dihedral angle of 69.12â (3)°. In the crystal structure, intermolecular O-Hâ¯O hydrogen bonds link the mol-ecules into a three-dimensional framework.
ABSTRACT
The title mol-ecule, C(16)H(16)Br(2)O(8), lies on a crystallographic twofold axis. Weak intra-molecular C-Hâ¯O hydrogen bonds may, in part, control the conformation of the mol-ecule. In the crystal structure, mol-ecules are connected into a two-dimensional network via weak inter-molecular C-Hâ¯O hydrogen bonds.
