Prequest: 2.15 1D Edit
The 2D Editor menus are very similar to those described in detail in the Quest manual (CSD Manuals, Vol 2, Chapters 1,5 and 6) so only a brief guide is given here. Some features of the editor will be rarely used as it is possible to draw most diagrams using only a small subset of commands.
DRAW: When active this draws a bond from the currently highlighted atom to the cursor position.
MOVE: When active this draws no bond but adds a new atom at the cursor position.
C N O S etc.: To change current atom type click on symbol. Other allows element selection from a periodic table menu. Any element symbol can be typed into the element box.
SING, DOUB etc.: Click on these symbols to set the current bond type.
TEMPLATES: A set of template structures are available for ease of drawing (Vol 3 Appendix 9).
GROUPS: Allows selection from a set of groups symbols permitted in the CSD e.g. Ph for phenyl (Vol 3 Appendix 8).
CHAIN: Creates a chain of the currently selected elements.
RING: Creates an N membered ring of currently selected atom and bond types.
LIGAND: Specialised use for attaching groups to metal complexes.
FUSE: Fuses two rings together at a specified position.
SPIRO: Performs spiro fusion of two molecules.
REPEAT: Specialised use for constructing metal complex repeated ligands.
DELATMS: Deletes atoms as selected. Toggle off to finish deletions.
DELBNDS: Deletes bonds as selected.Toggle off to finish deletions.
CLEAR: Clears the drawing area completely. Cannot be undone.
GRID: Draws a grid to assist tidy drawing.
AUTO-FIT: Move and scale the drawing so that it just fits into the window.
ZOOM-IN: Zoom into drawing to enlarge a specific area.
HYDROGENS: Sets the number of terminal hydrogens.
GEN-HYDS: Automatic generation of terminal hydrogens on carbons using bond type information.
UNGEN-HYDS: Removes all terminal hydrogens from carbons.
CHARGE: Type number for charge (e.g. -1) then select atoms to place charge on.
NUMBERS: Displays sequential numbers beside atoms.
RETURN-AND-SAVE: Returns to main menu saving the current 2D diagram.
RETURN-AND-CANCEL: Returns to main menu discarding any edits made in the 2D Editor. The original 2D diagram is restored.
REFRESH: Refreshes the screen.
CANCEL: Cancels a command selected by mistake.
HELP: Select a button for a brief description.
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