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*   Additional Page
By default, the application does not activate cleavage on an aromatic ring. However, you might activate bond cleavage on aromatic rings when working with small aromatic compounds. For example, when you generate fragments and mechanisms of phenol, you can generate the important fragment corresponding to the peak m/z  66 only after activating cleavage on aromatic systems.
By default, cleavage on aromatic systems is deactivated because of the quantity of fragments that can be generated from large aromatic compounds and because the aromatic bond is a very strong bond.
Additional page of the Reaction Restrictions dialog box
Allowed
Carbo - Cation/Anion
Display This Window Every Time Generation of Fragments & Mechanisms Is Started
Opens the Reaction Restrictions dialog box each time you start fragment generation. Clear this check box if you want to use the same parameter settings for subsequent fragment generations and do not want to see this dialog box each time.
If you clear this option and want to return to displaying the Reaction Restrictions dialog box each time you start fragment generation, follow the instructions To restore the Reaction Restrictions dialog box each time you start fragment generation.
Restores all default values in the Reaction Restrictions dialog box. These values take effect after the regeneration of fragments and mechanisms and affect all subsequent generations. The current Fragments & Mechanisms windows are not affected.


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Related Topics:
  Base Page
  Ionization and Cleavage Page
  H-Rearrangements Page
  Resonance Page
  Sizes Page
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