stereonotations
Differences
This shows you the differences between two versions of the page.
Both sides previous revisionPrevious revisionNext revision | Previous revisionNext revisionBoth sides next revision | ||
stereonotations [2012/10/13 12:23] – sanmark | stereonotations [2012/10/13 14:46] – sanmark | ||
---|---|---|---|
Line 9: | Line 9: | ||
Ligand geometry around double bonds defines cis-trans configurations without any special marking. Ligands with ‘trans’ positions and ‘cis’ positions denote the corresponding E or Z configurations. If the configuration is not known, the double bond is replaced with a crossed double bond. | Ligand geometry around double bonds defines cis-trans configurations without any special marking. Ligands with ‘trans’ positions and ‘cis’ positions denote the corresponding E or Z configurations. If the configuration is not known, the double bond is replaced with a crossed double bond. | ||
- | < | + | {{ : |
- | | {{ : | + | |
- | | Trans configuration | Unknown/ | + | |
- | < | + | |
The mcule registration system supports the distinction between unknown and unspecified/ | The mcule registration system supports the distinction between unknown and unspecified/ | ||
Line 22: | Line 18: | ||
Geometry around a tetrahedral center is specified using wedge bonds pointing to the center with their narrow ends. Up (solid) and down (hashed) wedge bonds denote well-defined geometry. Wavy bond is used to denote centers with unknown geometry: in this case the configuration is either R or S, but definitely one of them. Unmarked centers (without wedge or wavy bonds) denote fully unspecified geometry, the configuration can be R or S or a mixture of the two. | Geometry around a tetrahedral center is specified using wedge bonds pointing to the center with their narrow ends. Up (solid) and down (hashed) wedge bonds denote well-defined geometry. Wavy bond is used to denote centers with unknown geometry: in this case the configuration is either R or S, but definitely one of them. Unmarked centers (without wedge or wavy bonds) denote fully unspecified geometry, the configuration can be R or S or a mixture of the two. | ||
+ | |||
+ | {{ : | ||
===Stereo configuration types=== | ===Stereo configuration types=== |
stereonotations.txt · Last modified: 2012/10/15 12:27 by sanmark