X-ray crystallographic and quantum-chemical investigation of tert-butyl hydroperoxide.

Autor: Kosnikov, A., Antonovskii, V., Lindeman, S., Antipin, M., Struchkov, Yu., Turovskii, N., Zyat'kov, I.
Zdroj: Theoretical & Experimental Chemistry; Jan1989, Vol. 25 Issue 1, p73-77, 5p
Abstrakt: An MNDO calculation and an x-ray crystallographic investigation of tert-butyl hydroperoxide (I) were undertaken. The two symmetrically independent molecules of (I), which in fact have identical geometric parameters, form infinite chains along the y axis through staggered hydrogen bonds. The chains have local symmetry, described by a noncrystallographic slip plane. The difference between the experimental value of the COOH dihedral angle (average 100°) and the calculated value (128.5°) is most likely due to the formation of intermolecular hydrogen bonds in the crystal, the energies of which (∿30 kJ/mole) are considerably larger than the calculated excess energy of the conformers observed in the crystal (3.4 and 1.9 kJ/ mole). [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index