Crystal and molecular structure of 11,12-dihydroxydrim-8(9)-en-7-one

The crystal structure of 11,12-dihydroxydrim-8(9)-en-7-one was determined by X-ray diffraction. The unit cell parameters are a = 7.534(3), b = 12.192(5), c = 8.067(4) Å, β = 98.01(3) Å, space group P2₁, and Z = 2 for C₁₅H₂₄O_3. The structure was solved by direct methods and refined in the anisotropic approximation to R = 0.051 and R _w = 0.113. The intramolecular O-H?O hydrogen bond 2.892(6) Å] between the hydroxy groups closes an additional seven-membered H-ring in the molecule. In the crystal, the intermolecular O-H?O hydrogen bond 2.857(4) Å] between the hydroxyl group and the carbonyl oxygen atom links the molecules related by the translation along the c-axis to form infinite chains.