A second polymorph of bis­(triphenyl-λ5-phosphanyl­idene)ammonium chloride–boric acid adduct

摘要

The title crystal structure is a new triclinic polymorph of [(Ph3P)2N]Cl·(B(OH)3) or C36H30NP2 ⁺·Cl⁻·BH3O3. The crystal structure of the ortho­rhom­bic polymorph was reported by [Andrews et al. (1983). Acta Cryst. C>39, 880–882]. In the crystal, the [(Ph3P)2N]⁺ cations have no significant contacts to the chloride ions nor to the boric acid mol­ecules. This is indicated by the P—N—P angle of 137.28 (8)°, which is in the expected range for a free [(Ph3P)2N]⁺ cation. The boric acid mol­ecules form inversion dimers via pairs of O—H⋯O hydrogen bonds, and each boric acid mol­ecule forms two additional O—H⋯Cl hydrogen bonds to one chloride anion. These entities fill channels, created by the [(Ph3P)2N]⁺ cations, along the c-axis direction.