Acta Cryst. (2013). C69, 798-802 [ doi:10.1107/S010827011301651X ]
Abstract: In dibenzylammonium hydrogen maleate [or dibenzylammonium (2Z)-3-carboxyprop-2-enoate], C14H16N+·C4H3O4-, (I), the anion contains a fairly short and nearly linear O-HO hydrogen bond, with an O·O distance of 2.4603 (16) Å, but with the H atom clearly offset from the mid-point of the OO vector. The counter-ions in (I) are linked by two N-HO hydrogen bonds to form C22(6) chains and these chains are weakly linked into sheets by a C-HO hydrogen bond. Bis(dibenzylamino)methane, C29H30N2, (II), crystallizes with two independent molecules lying across twofold rotation axes in the space group C2/c, and the molecules are conformationally chiral; there are no direction-specific intermolecular interactions in the crystal structure of (II).
Formula: C14H16N+·C4H3O4- and C29H30N2
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