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1,3-Cyclohexanedione is an organic compound with the formula (CH 2) 4 (CO) 2. It is one of three isomeric cyclohexanediones . It is a colorless compound that occurs naturally.
For example, the following hydrogen atom migration is of order [1,5], attained by counting counterclockwise through the π system, rather than the [1,3] order designation through the ring CH 2 group that would mistakenly result if counted clockwise. As a general approach, one can simply draw the transition state of the reaction.
A band structure (energy level) outline of the EDMR mechanism. A donor impurity (P) sits just below the conduction band (C). An acceptor (R) sits between the donor and the valence band and provides a recombination pathway for the donor electron (small blue circle) to recombine with a hole in the valence band (V).
The immediate impact of avoided level crossing in a degenerate two state system is the emergence of a lowered energy eigenstate. The effective lowering of energy always correspond to increasing stability.(see: Energy minimization) Bond resonance in organic molecules exemplifies the occurrence of such avoided crossings.
Laser spectroscopic experiments often involve ionization through a photon energy resonance at an intermediate level, with an unbound final electron state and an ionic core. On resonance for phototransitions permitted by selection rules, the intensity of the laser in combination with the excited state lifetime makes ionization an expected outcome.
Hyperconjugation affects several properties. [6] [10]Bond length: Hyperconjugation is suggested as a key factor in shortening of sigma bonds (σ bonds). For example, the single C–C bonds in 1,3-butadiene and propyne are approximately 1.46 Å in length, much less than the value of around 1.54 Å found in saturated hydrocarbons.
The Wichterle reaction is a variant of the Robinson annulation that replaces methyl vinyl ketone with 1,3-dichloro-cis-2-butene. This gives an example of using a different Michael acceptor from the typical α,β-unsaturated ketone. The 1,3-dichloro-cis-2-butene is employed to avoid undesirable polymerization or condensation during the Michael ...
1,2-Cyclohexanedione; 1,3-Cyclohexanedione; 1,4-Cyclohexanedione This page was last edited on 23 June 2017, at 01:22 (UTC). Text is available under the Creative ...