1,4-Phenyl­ene-bis-(3,4-di­chloro-5-phenyl­carbamoyl-1H-pyrrole-2-carbox­amide) bis(tetra­butyl­ammonium chloride) aceto­nitrile disolvate

The title compound, C₃₀H₂₀N₆O₄Cl₄.2C₁₆H₃₆N⁺·2Cl⁻·2C₂H₃N, contains two hydrogen-bonded chloride anions bound to 1,4-phenyl­ene-bis-(3,4-di­chloro-5-phenyl­carbamoyl-1H-pyrrole-2-carbox­amide) as the tetra­butyl­ammonium salt. There is also a short pyrrolic hydrogen bond (N...Cl = 3.068 (3) Å), and two longer ones to the amino H atoms [N...Cl = 3.269 (3) Å and 3.275 (3) Å]. The neutral mol­ecule lies on an inversion centre situated at the centre of the central benzene ring.

4-Amino­methyl-phenyl­amino-bis-(3,4-di­chloro-5-phenyl­carbamoyl-1H-pyrrole-2-carbox­amide) tetra­butyl­ammonium salt

The crystal structure of the tetra­butyl­ammonium salt of doubly deprotonated 4-amino­methyl(phenyl­amino)bis-(3,4-di­chloro-5-phenyl­carbamoyl-1H-pyrrole-2-carbox­amide), 2C₁₆H₃₆N⁺·C₃₂H₂₂C_l4N₆O₄^2-, has been elucidated. The anion lies on an inversion centre and adopts a twisted S shape.

(1R*,2R*)-Di-tert-but­yl N,N′-(cyclo­hexane-1,2-di­yl)dicarbamate

The title compound, C₁₆H₃₀N₂O₄, was synthesized as part of ongoing studies into enantioselective recognition. The mol­ecule sits on a twofold axis and forms ladders via N—H...O hydrogen-bond pairs.