(Chester : International Union of Crystallography, 2015) Sonneck, Marcel; Peppel, Tim; Spannenberg, Anke; Wohlrab, Sebastian
The crystal structure of (E)-dodec-2-enoic acid, C12H22O2, an [alpha],[beta]-unsaturated carbÂoxyÂlic acid with a melting point (295 K) near room temperature, is characterized by carbÂoxyÂlic acid inversion dimers linked by pairs of O-H...O hydrogen bonds. The carbÂoxyÂlic acid group and the following three carbon atoms of the chain of the (E)-dodec-2-enoic acid molÂecule lie almost in one plane (r.m.s. deviation for the four C atoms and two O atoms = 0.012 Ã…), whereas the remaining carbon atoms of the hydroÂcarbon chain adopt a nearly fully staggered conformation [moduli of torsion angles vary from 174.01 (13) to 179.97 (13)°].
