Die Kristallstruktur der 2,4, 6-Trimethylpimelinsäuren 1. Mitteilung

The crystal structure of the stereoisomer m.p. 130° of 2,4,6-trimethylpimelic acid has been determined by three-dimensional X-ray analysis. The cristals are monoclinic, a = 10.35, b = 10.70, c = 11.61 Å, β = 110°12′, Z = 4, space group P_{2 1/c}, the structure has been solved by direct methods and refined by least-squares methods. The configuration of the acid is given by formula I; the chirality of the asymmetric centres is (2-R, 4-r, 6-S).