Acta Crystallographica Section C

Crystal Structure Communications

Volume 62, Part 6 (June 2006)

organic compounds

gg1300 scheme

Acta Cryst. (2006). C62, o358-o361 [ doi:10.1107/S0108270106015149 ]

Two salts of di-p-toluoyltartaric acid with aromatic amines

L. R. Nassimbeni and H. Su

Abstract: The structures of bis[(R)-(+)-1-phenylethylammonium] (2R,3R)-(-)-2,3-di-p-toluoyloxybutanedioate methanol disolvate monohydrate, 2C₈H₁₂N⁺·C₂₀H₁₆O₈^2-·2CH₄O·H₂O, (I), and bis(benzylammonium) (2R,3R)-(-)-2,3-di-p-toluoyloxybutanedioate dihydrate, 2C₇H₁₀N⁺·C₂₀H₁₆O₈^2-·2H₂O, (II), exhibit extensive hydrogen bonding, with (N-)HO and (O-)HO distances in the ranges 2.716 (2)-2.929 (3) and 2.687 (2)-2.767 (2) Å, respectively, in (I), and 2.673 (2)-2.888 (2) and 2.785 (2)-2.931 (2) Å, respectively, in (II). The amine groups are protonated and the carboxylate groups of the tartrate anions are fully deprotonated. The conformation of the toluoyltartrate anion and its molecular parameters are similar in both structures.

Formula: 2C₈H₁₂N⁺·C₂₀H₁₆O₈^2-·2CH₄O·H₂O and 2C₇H₁₀N⁺·C₂₀H₁₆O₈^2-·2H₂O


	Structure factor file (CIF format) (207.1 kbytes) [ doi:10.1107/S0108270106015149/gg1300Isup2.hkl ] Contains datablock I

	Structure factor file (CIF format) (211.2 kbytes) [ doi:10.1107/S0108270106015149/gg1300IIsup3.hkl ] Contains datablock II

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