A sawhorse projection is a view of the projected bond as if we were looking at the model from above and to the right of the model to draw a sawhorse projection, follow these steps. Geometry of organic compounds h c c o h h h h h h cch sp3 sp2 sp tetrahedral planar linear tetrahedron wd t twedge structures sawhorse projectionsawhorseprojection newman projection viewed from the front carbon to the back through the cthe c-c bondc bond.
Sawhorse projections are the normal line structure molecules drawn usually without hydrogens these can be converted into newman projections or other structures which show 3-dimensional representations of molecules. Newman projection and sawhorse projection the newman projection and the sawhorse projection are used to depict specific conformers or to distinguish vicinal stereochemistry in both cases, two specific carbon atoms and their connecting bond are the center of attention. Test your fischer projections skills with this short quiz including questions on chirality and stereochemistry, conversion of fischer to newman, sawhorse and 5/6 membered sugar rings.
Lecture on drawing sawhorse projections for organic molecules using ethane as an example using both drawings and models ———————————— interview.
A sawhorse projection is similar to a newman projection, but it shows the carbon-carbon bond that is hidden in a newman projection just as with newman projections, you can draw sawhorse projections in eclipsed and staggered conformations below is a sawhorse projection of the gauche conformation of butane. This video (3 of 5) shows you how to convert a 3-dimensional sawhorse projection of a molecule to a 2-dimensional fischer projection and back learn the proper. Ths diagram style is an alternative to a sawhorse projection, which views a carbon-carbon bond from an oblique angle, or a wedge-and-dash style, such as a natta projection these other styles can indicate the bonding and stereochemistry, but not as much conformational detail.
Sawhorse projections can also be drawn so that the groups on the front carbon are staggered (60 degrees apart) or eclipsed (directly overlapping) with the groups on the back carbon below are two sawhorse projections of ethane the structure on the left is staggered, and the structure on the right is eclipsed.