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A Newman projection is a drawing that helps visualize the 3-dimensional structure of a molecule. [1] This projection most commonly sights down a carbon-carbon bond, making it a very useful way to visualize the stereochemistry of alkanes.
Above: Newman projection; below: depiction of spatial orientation. In chemistry, rotamers are chemical species that differ according to rotations about a single bonds. Various arrangements of atoms in a molecule that differ by rotation about single bonds can be referred to as different conformations.
2,5-Dimethylhexane; Except where otherwise noted, data are given for materials in their standard state (at 25 °C ... 2,3,4-Trimethylpentane is a branched alkane.
2,5-Dimethylhexane; 3,3-Dimethylhexane; 3,4-Dimethylhexane [Wikidata This page was last edited on 27 April 2022, at 16:52 (UTC). Text is available under the ...
The example below is looking down the C2 and C3 bond. Below is the sawhorse and Newman representation of butane in an eclipsed conformation with the two CH 3 groups (C1 and C4) at a 0-degree angle from one another (left). If the front is rotated 60° clockwise, the butane molecule is now in a staggered conformation (right).
In a Newman projection, the molecule will be in a staggered arrangement with the anti-periplanar functional groups pointing up and down, 180° away from each other (see Figure 4). Figure 5 shows 2-chloro-2,3-dimethylbutane in a sawhorse projection with chlorine and a hydrogen anti-periplanar to each other.
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