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Bond Angle

  • Checker searches for bonds NOT matching the following rules:
* Triple bond angle 180° (± 0.5 rad): images/download/attachments/1806464/check_angle1.png check_angle1
* Double bond angle 120° or 180° (± 0.5 rad): images/download/attachments/1806464/check_angle2.png check_angle2
* sp2 atom's bond angles 120°: images/download/attachments/1806464/check_angle3.png check_angle3
* sp3 atom's bond angles 90° or 3 bond angles 120°, 4th bond of an angle of n times 15°; or a bond angle of 120° and two adjacent angles equal: images/download/attachments/1806464/check_angle4.png check_angle4
  • Fixers:

    offers cleaning the structure by:

    • 2D clean or (clean);
    • partial clean (partialclean)

Example :

Bond Angle Checker (bondangle) Warning: Fix
Clean (clean)
Detect Bond Angle errors images/download/attachments/1806464/ex_bondangle_ch1.png ex_bondangle_ch images/download/attachments/1806464/ex_bondangle_f1.png ex_bondangle_f

The current version of bond angle checker examines chain bonds of 2D molecules. Envelope-shaped cyclic compounds are considered as error and partial clean is not available.