Crystal structure of lactitol (4- O-β- d-galactopyranosyl- d-glucitol)

Lacitol, C 12H 24O 11, is monoclinic, space group P2 1 with cell dimensions a = 7.614(1), b = 10.757(1), c = 9.370(1) Å, β = 108.19(1)°, and V = 729.0(1) Å 3; Z = 2, D x = 1.57 Mg.m −3, λ(Cu- K α) = 1.5406 Å, μ = 1.166 mm −1, F(000) = 368, and T = 23°. The structure was solved by direct methods and refined by least-squares calculations to R = 0.048 for 1510 unique observed reflections. There are one intra- and eight inter-molecular hydrogen bonds in the structure. Bond lengths and angles accord well with the mean values of related structures. The galactopyranosyl ring has a chair conformation.