13C NMR Spectra of organic peroxides

Conclusions A study has been made of the¹³C NMR spectra of hydroperoxides, peroxides, peroxy esters, and diacyl peroxides.The signal of the carbon atoms of a hydrocarbon radical present in the-position relative to the peroxide group is shifted downfield in comparison with the nonperoxide analog. The replacement of -O- by an -OO-group at a carbonyl carbon produces an upfield shift of the signal from this atom.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 2, pp. 271–275, February, 1982.The authors wish to express their appreciation to P. P. Chernov for recording the spectra, and to I. I. Chervin for participating in discussion of this work.     

Substituent effects on the nature of hydrogen bonding in organic hydroperoxides and the structure of triphenylmethyl hydroperoxide

It has been found that in the crystalline state in triphenylmethyl hydroperoxide the hydroperoxy group is involved in intermolecular hydrogen-bond formation of the type O-h..., with one C...C -bond in a benzene ring. Conformational analysis and comparison with the results of x-ray structural analysis leads us to conclude that there are very narrow limits on the possible conformations of the COOH group in tert-butyl, cumyl, 1,1-diphenylethyl, and triphenylmethyl hydroperoxides, independent of their aggregation state or the nature of the substituent attached to the COOH group.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 1, pp. 68–73, January, 1990.     

Synthesis and crystal structure of α,α′-dihydroxydi(perfluorocyclohexyl)peroxide

Conclusions Reaction of stoichiometric quantities of perfluorocyclohexanone and 98% H₂O₂ in neutral media quantitatively forms ,-dihydroxydi(perfluorohexyl)peroxide, for which the main crystal and molecular structural parameters were determined by x-ray analysis.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 4, pp. 918–923, April, 1989.     

Molecular structure of dicumyl peroxide

Conclusions It has been shown by x-ray diffraction analysis that the peroxide group in. dicumyl peroxide has a planar transoid conformation as in the crystals of its analogs (bis(triphen-ylmethyl) peroxide and di-tert-butyl peroxide); and so this conformation is the preferred one for peroxides with two tertiary hydrocarbon substituents. This conclusion is supported by the results of conformational calculations carried out using MNDO and molecular mechanics.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 4, pp. 791–795, April, 1988.