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 b y X-ray diffraction. The unit cell parameters are a = 7.534(3), b = 12.192( 5), c = 8.067(4) Angstrom, beta = 98.01(3) Angstrom, space group P2(1), and Z = 2 for C15H24O3. The structure was solved by direct methods and refined in the anisotropic approximation to R = 0.051 and R-w = 0.113. The intramo lecular O-H ... O hydrogen bond [2.892(6) Angstrom] between the hydroxy gro ups closes an additional seven-membered H-ring in the molecule. In the crys tal, the intermolecular O-H ... O hydrogen bond [2.857(4) Angstrom] between the hydroxyl group and the carbonyl oxygen atom links the molecules relate d by the translation along the c-axis to form infinite chains. (C) 2000 MAI K "Nauka/Interperiodica".