sawhorse projection
E695649
A sawhorse projection is a type of molecular drawing used in organic chemistry to depict the three-dimensional conformation of adjacent carbon atoms and their substituents along a carbon–carbon single bond.
Observed surface forms (1)
| Surface form | Occurrences |
|---|---|
| Newman projection | 1 |
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
molecular representation
ⓘ
organic chemistry concept ⓘ stereochemical projection ⓘ |
| advantage |
gives oblique 3D view of C–C bond
ⓘ
intuitive for beginners in stereochemistry ⓘ |
| appliesTo |
alkanes
ⓘ
segments of larger carbon chains ⓘ substituted ethanes ⓘ |
| assumes | tetrahedral geometry at carbon ⓘ |
| clarifies | front vs rear carbon environments ⓘ |
| comparedWith |
Fischer projection
NERFINISHED
ⓘ
Newman projection ⓘ zigzag (line-angle) representation ⓘ |
| conversionPossibleTo |
Fischer projection (for appropriate systems)
ⓘ
Newman projection ⓘ |
| depicts |
adjacent carbon atoms
ⓘ
substituents on adjacent carbon atoms ⓘ three-dimensional conformation ⓘ |
| field | organic chemistry ⓘ |
| focusesOn | carbon–carbon single bond ⓘ |
| helpsDistinguish |
gauche vs anti relationships
ⓘ
staggered vs eclipsed conformers ⓘ |
| historicalContext | developed for clearer depiction of conformations along single bonds ⓘ |
| limitation |
can be ambiguous without clear labeling
ⓘ
not quantitatively accurate for bond angles ⓘ |
| notation | bonds drawn as simple lines without perspective foreshortening ⓘ |
| orientation |
C–C bond drawn diagonally
ⓘ
front carbon drawn lower left ⓘ rear carbon drawn upper right ⓘ |
| relatedConcept |
conformational analysis
ⓘ
dihedral angle ⓘ stereochemistry ⓘ torsional strain ⓘ |
| represents |
front carbon with three substituent bonds
ⓘ
rear carbon with three substituent bonds ⓘ |
| shows |
anti conformations
ⓘ
eclipsed conformations ⓘ gauche conformations ⓘ relative spatial arrangement of substituents ⓘ staggered conformations ⓘ |
| typicalApplication |
butane conformational analysis
ⓘ
ethane and substituted ethane derivatives ⓘ |
| usedFor |
illustrating dihedral angles qualitatively
ⓘ
illustrating steric interactions ⓘ illustrating torsional strain ⓘ teaching conformational analysis ⓘ visualizing conformational isomers ⓘ |
| uses | conventional wedge and line drawing styles in some variants ⓘ |
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Newman projection