Peroxides conformation

Structures A B and C represent different conformations of hydrogen peroxide Conformations are different spatial arrangements of a molecule that are generated by rotation about single bonds Although we can t tell from simply looking at these struc tures we now know from experimental studies that C is the most stable conformation... 

Fluorocarbonyl peroxynitrate gas electron diffraction, 744 NMR spectroscopy, 743 vibrational spectmm, 743 Fluoroethylenes, final ozonide, 722 Fluoroformyl peroxide, conformation, 702 Fluorometry... 

Like hydrogen peroxide the inorganic substances hydrazine (H2NNH2) and hydroxylamine (H2NOH) possess conformational mobility Wnte stmctural representations or build molecular models of two different staggered conformations of (a) hydrazine and (b) hydroxylamine... 

Stereoisomers of peroxides (4) and (5) are known to exist and their conformations have been studied using photoelectron, nmr, and other spectroscopic methods, and their crystalline stmctures have been deterrnined (122,154,155). 

DMSO, molybdenum peroxide, benzene, reflux, 7-20 h, 60% yield. This method was used to m onoprotect 1,2-diols. The method is not general because oxidation to a-hydroxy ketones and diketones occurs with some substrates. On the basis of the mechanism and the results it would app>ear that overoxidation has a strong conformational dependence. 

A related molecule is hydrogen peroxide. Again, it might be expected that rotation (around the oxygen-oxygen bond) would lead to three all-staggered conformers. 

Steric and conformational factors are also important, especially in cyclic systems.233 There is a preference for the migration of the group that is antiperiplanar with respect to the peroxide bond. In relatively rigid systems, this effect can outweigh the normal preference for the migration of the more branched group.234... 

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