Question

Name the different methods used to represent three dimensional structure of a moleculecof the paper

Answer 1

Different methods used to represent three dimensional structure of a molecule on the paper

Definition:

• Molecules have a three dimensional shape or configuration.
• The shape depends on the preferred spatial orientation of covalent bonds to atoms with two or more bonding partners.
• Three dimensional configurations are best viewed through models.
• In order to describe such configurations on a two dimensional surface (paper,blackboard,or screen),perspective drawings are often used,in which the direction of a bond is indicated by the line connecting the bonded atoms.

Four different methods used to represent three-dimensional structure of a molecule on the paper:

1. Wedge formula:Using the solid and dash wedge formula,a two dimensional picture of a molecule can be interpreted as a three dimensional image.
2. Fischer projection formula:The Fischer projection of Fischer projection formula is a convention used to depict a stereoformula in two dimensions without destroying the stereochemical information,i.e.,absolute configuration,at the chiral centers.
3. Newman projection:In stereochemistry,a Newman projection shows the conformationof chemical bonds from front to back.The front atom is represented by a dot,while the back atom is represented by a circle.The front atom is called proximal,while the back atom is called distal.
4. Sawhorse projection:In a saw horse projection,a moleculeis viewed from an angle rather than from the side.A saw horse formula represents a specific conformation of a molecule.Carbon atomscan be better visualized in three dimensions withsawhorse projection.

Therefore,the different methods used to represent three dimensional structure of a molecule on the paper are Wedge formula,Fischer projection formula,Newman projection and Sawhorse projection.