Structure tab

MarvinSketch

• Highlight Valence Errors highlights atoms having wrong valences with red underline when it is checked.

• Automatic Lone Pair Calculation calculates lone pairs automatically. Make sure View > Misc > Lone Pairs is checked to see the result.

• Automatic Plus Signs in Single Step Reactions enables the automatic reaction recognition. For more information click here.

• Validate S-groups At Creation disables the S-group types in the drop-down list which would not yield a chemically correct structure. For more information on S-groups click here.

  MarvinView

• Highlight Valence Errors highlights atoms having wrong valences with red underline in MarvinView.

  General Settings

• Show Lone Pair as Line when checked, lone pairs on the canvas are shown as lines.

• Show Charge in Circle when checked, a circle is displayed around the charge.

  Carbon Labels

Carbon Labels options determine the condition of displaying C labels on Carbon atoms.

Always	Never	At straight angles and implicit H atoms

Ligand Orders

• Always

• Never

• On R-groups with definitions