Die Kristallstruktur von 1,4‐trans‐Cyclohexan‐dicarbonsäure

Abstract
Crystals of 1,4‐trans‐cyclohexane‐dicarboxylic acid are monoclinic, a = 5.60 Å, b = 9.63 Å, c = 8.05 Å, γ = 107°14′, space group P21/b (first setting), with 2 centrosymmetric molecules in the unit cell. The structure has been solved by direct methods and refined by full‐matrix least‐squares analysis of three‐dimensional intensity data. The mean CCC‐angle in the cyclohexane ring is found 112.0°. The conformation of the carboxylic group in various acids is discussed.