Decomposition and isomerization of bridgehead cis 1,2-diazenes (azoalkanes)

Synthesis of Bisbicyclo[1.1.1]pentyldiazene. The Smallest Bridgehead Diazene

“…Bridgehead diazenes with no α-hydrogen undergo trans−cis isomerization and are more stable than their acyclic counterparts. An extensive study of bridgehead diazenes such as azo-1-adamantane, azo-1-bicyclo[2.2.2]octane, azo-1-bicyclo[2.2.1]heptane, and azo-1-bicyclo[2.1.1]hexane was reported in 1982 . The bulkiness of the bridgehead group plays an important role in the isomerization and decomposition .…”

Reversible tautomerization of radical cations. Photoionization of 2-methoxyethanol and 3-methoxy-1-propanol

“…For purposes of comparison, the spectrum of 1,3-dimethoxypropane is displayed below it. We shall not discuss these spectra in detail, except to note that the two lowest bands in both spectra can be assigned to symmetric and antisymmetric combinations of oxygen lone pairs from the two functional groups.23 In 1,the splitting between the first two vertical IP's at 9.68 and 9.93 eV (which are more clearly separated in higher resolution spectra) is the same as in 1,2-dimethoxyethane. The separation between the first two bands is larger in methoxyalkanols, as would be expected, since the interacting lone pairs are on chemically nonequivalent oxygen atoms.…”

Electron‐Transfer‐Catalyzed cis → trans Isomerization of 1,1′‐Azonorborane. Prototype of a reversible two‐stage storage system

“…Aside from cis-azobicyclo[2.1. llhexane [5], cis-1 ( = (Z)-1,l'-azobicyclo[2.2. llheptane) is one of the few acyclic cis-azoalkanes that can be handled ') Electron-Transfer-Catalyzed Reactions, Part 11. Part I: [2].…”