Successful incorporation of triptycene into benzimidazole-linked polymers leads to the highest CO(2) uptake (5.12 mmol g(-1), 273 K and 1 bar) by porous organic polymers and results in high CO(2)/N(2) (63) and CO(2)/CH(4) (8.4) selectivities.

In the title compound, C(20)H(21)BrN(2)O(2), the bromo-phenyl ring is twisted by 40.13 (8)° from the benzimidazole mean plane and the Br atom deviates by 0.753 (1) Å from that plane. The sec-butyl group is disordered over two conformations in a 0.898 (5):0.102 (5) ratio. In the crystal, mol-ecules related by translation along [[Formula: see text]10] are linked into chains via weak C-H⋯Br hydrog...

In the title compound, C(14)H(10)N(2)O, the benzoyl ring and benzimidazole ring system are aligned at a dihedral angle of 50.2 (2)°. In the crystal, inter-molecular N-H⋯N hydrogen bonds between adjacent imidazole groups generate supra-molecular C(4) chains running along the b axis.

In the title compound, C(21)H(24)N(2)O(3), the mean planes of the benzene ring and the benzimidazole ring system form a dihedral angle of 69.94 (7)°. The ethyl group atoms of the ethano-ate fragment are disordered over two sets of sites, with refined occupancies of 0.742 (6) and 0.258 (6). In the crystal, there are weak C-H⋯N hydrogen bonds which connect mol-ecules into chains along the b axis....

Novel heteroleptic ruthenium complexes--RD1, RD5, RD10 and RD11--with ligands based on benzimidazole were synthesized and characterized for application to dye-sensitized solar cells (DSSC); the remarkable performance of RD5-based DSSC is understood for its superior light-harvesting ability and slower charge-recombination kinetics.

In the title compound, C(21)H(24)N(2)O(4), the benzimidazole ring system is almost planar, with a maximum deviation of 0.047 (1) Å and makes a dihedral angle of 88.44 (5)° with the attached benzene ring. In the crystal, mol-ecules form infinite chains along the b axis by way of inter-molecular O-H⋯N and C-H⋯O inter-actions. Weak C-H⋯π also contribute to the stabilization of the crystal structure.

Solvothermal reactions of CuI with four flexible N-heterocyclic ligands, 1,2-bis(4-pyridyl)ethane (bpe), 1,1'-(1,4-butanediyl)bis-1H-benzimidazole (bbbm), 1,1'-(1,4-butanediyl)bis-1H-benzotriazole (bbbt), and 1,1'-(1,5-pentanediyl)bis-1H-benzimidazole (pbbm), afforded four new [Cu(n)I(n)]-based coordination polymers, [Cu3I(mu-I)(mu3-I)(bpe)3]n (1), {[CuI(bbbm)1.5].0.25MeCN}n (2), and [Cu4(mu3-I...

In the title mol-ecule, C(26)H(26)N(4), the central benzene ring forms dihedral angles of 89.9 (2) and 85.4 (2)° with the two benzimidazole rings.

In the title compound, C(20)H(21)FN(2)O(2), the benzene ring and the benzimidazole ring system are inclined at a dihedral angle of 44.40 (9)°. In the crystal, mol-ecules are linked by inter-molecular C-H⋯O hydrogen bonds, forming a zigzag chain along the b-axis direction. An intra-molecular C-H⋯π inter-action is also observed.

The construction of carbon–carbon bonds by direct involvement two unactivated carbon–hydrogen bonds, without any directing group, ensures a high atom economy the entire process. Here, we describe simple protocol for Pd(II)/Cu(II)-promoted intermolecular cross-dehydrogenative coupling (CDC) 5-arylimidazoles, benzimidazoles, benzoxazole and 4,5-diphenylimidazole at their C-2 position with functio...