Ueber das 2-Oxy-dibenzyl

Ueber Das Verschwinden Der Θ-functionen

1,3-Dibenzyl-2-methyl­benzimidazolium chloride

The cation of the title salt, C(22)H(21)N(2) (+)·Cl(-), contains a planar benzimidazolium unit (r.m.s. deviation = 0.02 Å); the phenyl rings of the benzyl substituents form dihedral angles of 68.2 (1) and 79.7 (1)° with the plane of the benzimidazolium fragment.

1,3-Dibenzyl-2-(2-chloro­phen­yl)-4-methyl­imidazolidine

In the title compound, C24H25ClN2, the methine, methyl-ene and methyl C atoms of the methyl-substituted imidazolidine ring are disordered over two sets of sites with a refined occupancy ratio of 0.834 (4):0.166 (4). Each disordered ring assumes an envelope conformation with an N atom as the flap. The pendant benzyl rings are oriented equatorially with respect to the imidazolidine ring. The chlo...

2-[(4,6-Dimeth­oxy­pyrimidin-2-yl)­oxy]benzaldehyde

In the title compound, C(13)H(12)N(2)O(4), the dihedral angle between the benzene and pyrimidine rings is 55.57 (13)°. The carbonyl group and the two methoxyl groups are approximately coplanar with the benzene ring and pyrimidine ring; the C-C-C-O, C-O-C-N and C-O-C-C torsion angles being -6.1 (5), -4.8 (4) and 179.9 (3)°, respectively. In the crystal, mol-ecules are linked via C-H⋯O inter-acti...

2-[(2-Acet­oxy­benzo­yl)­oxy]benzoic acid

The title compound, C(16)H(12)O(6), is a common impurity of ortho-acetyl-salicylic acid (aspirin). The benzene rings form a dihedral angle of 81.9 (1)° while the acetyl and carboxyl groups form dihedral angles of 74.0 (1) and 26.4 (2)°, respectively, with the benzene rings to which they are bound. In the crystal, mol-ecules are linked by pairs of O-H⋯O hydrogen bonds between the carboxyl groups...