Sodium Chloranilate Trihydrate

Abstract

In the title compound, 2Na+.C6ClzO~-.3H20, the almost planar chloranilate ions, dianions of 3,6-dichloro-2,5-dihydroxy-p-benzoquinone, are parallel to the (010) plane and arranged in double chains along the [100] direction. Between the double chains, the sodium cations are situated in distorted octahedra which share edges to form chains along the [011] direction. Bond lengths within the chloranilate anion are consistent with the occurance of two independent x systems.

Hydrogen bonding in two solid phases of phenazine–chloranilic acid (1/1) determined at 170 and 93 K

“…1) is consistent with that reported by Horiuchi, Ishii et al (2005), but more precise molecular geometries were obtained (Table 1). The chloranilic acid molecule shows a characteristic structure, having four short C-C bonds [1.3547 (17)-1.4583 (15)Å] and two extremely long C-C bonds [1.5115 (18)-1.5251 (18)Å], which is explainable in terms of the double π system of the anion (Anderson, 1967c;Benchekroun & Savariault, 1995). In the crystal, the phenazine and chloranilic acid molecules are arranged alternately through two kinds of O-H· · ·N hydrogen bonds (Table 2) Table 2) and that the O4-H4 bond is much longer than the O2-H2 bond.…”

35Cl NQR study of lattice dynamic and magnetic property of a crystalline coordination polymer {CuCA(phz)(H2O)2}n

“…However, the localized dipole model seems not to be enough to describe the nuclear-electron interaction that is effective in the nuclear relaxation. Since the chloranilate ligand has the double O-C-C-C-O π system [16,17], a delocalization of electron spin over the chloranilate ligand will have to be taken into account. The delocalization will result in an increase of the nuclear-electron magnetic coupling and a smaller τ e , which corresponds to a larger |J| value, will be derived from the T 1 value by use of (13).…”

Bis(4-methoxy-3,4-dihydroquinazolin-1-ium) chloranilate

“…For a related structure, see: Gotoh & Ishida (2011). For the double system of the chloranilate anion, see: Andersen (1967); Benchekroun & Savariault (1995). Table 1 Hydrogen-bond geometry (Å , ).…”