1.7: 3D Structure
Different atoms in the same molecule can produce different molecules due to atomic connectivity, so read about dashed-wedged Line structures at the bottom of the page to understand what has been introduced above. Dashed lines show atoms and bonds that go into the page, behind the plane, away from you.
What is a wedge dash structure?
Simple lines represent bonds in the plane of the image, wedge-shaped lines represent bonds towards the viewer, and dashed lines represent bonds away from the viewer in the wedge-and-dash (uncountable) (chemistry) method of representing the three-dimensional structure of a molecule.
What is wedge dash representation?
In Wedge-Dash notation, a solid wedge denotes a bond that protrudes out of the plane of the paper towards the viewer, whereas a dashed wedge denotes a bond that protrudes out of the plane of the paper away from the viewer or into the plane of the paper, and thus the bond within the plane of the paper is represented by a line.
What is sawhorse projection formula?
Sawhorse projection, which allows for better visualization of the three-dimensional geometry between adjacent carbon atoms, is commonly used to show interactions between groups on adjacent carbon atoms in mechanisms.
Does Wedge mean axial?
When drawing the chair conformation, one is axial and the other is equitorial because both are on wedges. In the second set, one substituent is “down” and the other is “up,” and when labeling the chair, it turns these two specifically to be both equitorial.
What is S and R configuration?
The configuration is u201cRu201d if the three groups projecting toward you are ordered clockwise from highest priority (#1) to lowest priority (#3), and u201cSu201d if the three groups projecting toward you are ordered counterclockwise from highest priority (#1) to lowest priority (#3).
Is clockwise R or S?
The assignment is reversed if the lowest priority group is in front of this curved arrow: clockwise is S and counterclockwise is R.
What is wedge example?
A shovel, a knife, an axe, a pick axe, a saw, a needle, scissors, or an ice pick are examples of wedges that can be used to separate things, but wedges can also be used to hold things together, as in the case of a staple, push pins, tack, nail, doorstop, or shim.
What is wedging in drawing?
Wedge-hash diagrams are typically drawn with two bonds in the plane of the page, one in front of the plane and one behind the plane, to give the molecule a three-dimensional perspective: we imagine the bold lines being closer to us and the hashes fading away in the background.
What is a dash and wedge drawing?
A wedge and dash projection is a drawing that uses three types of lines to represent a molecule’s three-dimensional structure: dashed lines for bonds that extend away from the viewer, wedge-shaped lines for bonds that face the viewer.
What does R and S mean in stereochemistry?
The letters R and S stand for Rectus and Sinister, which are Latin for right and left, respectively. Chiral molecules can have different chemical properties but have the same physical properties, making enantiomer separation difficult.
What does a wedge mean in the dash wedge line structure?
Wedges: These wedge-shaped bonds represent the connected group or atom coming out of the plane towards the viewer. Dashes: Dashed bonds represent the connected group or atom behind the paper or away from the viewer. Solid Lines: These lines show the groups or atoms connected in the plane of the paper.
What is dash line formula?
Ozone’s dashed-line formula shows partial bonds and partial charges: A dashed-line formula is useful because it tells you right away that “this molecule is a resonance hybrid.” It also shows you what parts of the electron pattern are delocalized.