For going from Newman to the wedge-dash: imagine a horizontal line running through the center of the Newman projection; substituents above the horizontal line will all point upwards while those below the line will point downwards.
How do you convert wedge dash structures to Newman projections?
Here's how to convert the wedge - dash structures to Newman Projections. Draw two Newman projection templates. Draw two circles. Put a dot in the centre of each. On one circle, draw a Y with the spokes radiating from the dot at 120° angles. Click to see full answer. In respect to this, how do you draw Newman projections in ChemDraw?
How do you draw Newman projections?
When drawing Newman projections, look at the molecule from a different perspective by looking down two of the carbon atoms, so you can only see the front carbon atom and not the back carbon (as it is blocked by the front carbon).
How do you draw a wedge and Dash structure?
Although there is no hard-and-fast rule for drawing a wedge and dash structure, most people find it easiest to visualize the three-dimensional shape of a molecule if the pair of bonds in the same plane as the paper is drawn next to each other, and the bonds in front of and behind the plane are also drawn next to each other...
How to show the front carbon in Newman projections?
When drawing Newman projections, the front carbon is indicated by the central point of from “Y-like” shape, and the back carbon is not explicitly shown, although it is assumed to be right behind the front carbon.
How do you go from Newman projection to wedge and dash?
0:284:30Converting wedge dash to Newman projections [SMITH 5th] - YouTubeYouTubeStart of suggested clipEnd of suggested clipBe very careful remember the wedge means it comes out and if you're looking in this direction itMoreBe very careful remember the wedge means it comes out and if you're looking in this direction it means that the bromine. Is going to the right. And the hydrogen is going to the left.
How do you draw wedge and dash structures?
3:0812:23solid dash wedge tutorial - YouTubeYouTubeStart of suggested clipEnd of suggested clipThe first one is tetrahedral. So if you can picture kind of how tetrahedral shape I'm going to drawMoreThe first one is tetrahedral. So if you can picture kind of how tetrahedral shape I'm going to draw it first in more of a ball and stick model.
How do you draw structures from Newman projections?
10:0611:23Converting Newman Projection to Line Drawing - YouTubeYouTubeStart of suggested clipEnd of suggested clipThen make a sawhorse. Because there it's a little bit more clear where your carbon carbon bonds areMoreThen make a sawhorse. Because there it's a little bit more clear where your carbon carbon bonds are and then you can just keep kind of continue the rotation.
How do you draw Fischer projections from Newman projection?
6:188:32Converting Newman to Fischer Projections (vid 4 of 5) - YouTubeYouTubeStart of suggested clipEnd of suggested clipLet's start with eclipse because that's much easier just draw a circle in between the green andMoreLet's start with eclipse because that's much easier just draw a circle in between the green and purple carbons. And that's exactly the circle that you see on the Newman projection for.
How do you draw a wedge?
1:075:22Wedge-Dash Drawings - YouTubeYouTubeStart of suggested clipEnd of suggested clipSo they're going to get the straight lines so straight line straight line to a hydrogen. Now i gotMoreSo they're going to get the straight lines so straight line straight line to a hydrogen. Now i got one hydrogen coming off the page towards me. So i'm going to draw a wedge.
What is a wedge and dash?
wedge-and-dash (uncountable) (chemistry) A method of representing the three-dimensional structure of a molecule in which 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.
How do you draw a wedge and dash from Fischer projections?
0:557:00Converting from a Bond Line (Wedge Dash) to a Fischer ProjectionYouTubeStart of suggested clipEnd of suggested clipThe one going back we represent through dashes. Okay key thing is we have to turn this con structureMoreThe one going back we represent through dashes. Okay key thing is we have to turn this con structure here to sort of the fischer type confirmation. In the fischer. Projection.
How do you draw Newman projections online?
2:257:59How to Draw Newman Projections - YouTubeYouTubeStart of suggested clipEnd of suggested clipSo first thing to do with a Newman projection is to draw three lines that meet at a point and theyMoreSo first thing to do with a Newman projection is to draw three lines that meet at a point and they signified. The three things attached to the front carbon atom so this one here.
What is Newman's projection formula?
What is Newman projection formula? A Newman projection, useful in alkane stereochemistry, visualizes the conformation of a chemical bond from front to back, with a line representing the front atom and a circle representing the back carbon.
How do Newman projections work?
Newman projections focus on any two carbons and the groups coming off them in a molecule by shifting the view from which the molecule is visualized. When drawing Newman projections, look at the molecule from a different perspective by looking down two of the carbon atoms, so you can only see the front carbon atom and not the back carbon ...
What is a Newman projection?
A Newman projection is a way to take a snapshot of what a molecule looks like at a particular moment in time from a different angle than we’re used to.
What are the two subgroups of Newman projections?
The overlap, and the energy difference associated with this overlap, leads to two energetic subgroups of Newman projections: eclipsed and staggered . Eclipsed conformations result in more steric hindrance between two atoms than staggered conformations because of how close the atoms can get to one another. Eclipsed conformations are therefore less ...
What shape does the front carbon of a Newman projection have?
When drawing Newman projections, the front carbon is indicated by the central point of from “Y-like” shape, and the back carbon is not explicitly shown, although it is assumed to be right behind the front carbon.
How far apart are the two largest substituents on each carbon of the Newman projection?
In this form, the largest substituent coming off the front carbon is exactly 180 o degrees away from the largest substituent on the back carbon; therefore, the two largest substituents on each carbon of the Newman projection are as far apart from one another as possible, leading to the least possible steric hindrance.
Stop drawing bad structures!
Download structure-drawing templates, as seen in the video above, to draw better structures that your Prof. can understand in the exam!
Technology to the rescue!
I feel your pain, so I created some interactive models for you, below. Grab a pen and some paper, and use the model to draw Newman projections for each of these from the point of view indicated by the beady little eye. You can check your answers by expanding the tab below each question!
Are you now a Newman Ninja?
Are you feeling confident with these? Like a Newman ninja? Let me know in the comments below, and please tell me what you think of having practice questions with interactive molecules like this!
