#molecular representation

[organiclearning-blog]

The following will be gone over in greater detail at a later date. Right now this is just showing how molecular representations can be drawn as.

Thicker lines indicate a wedge for all molecular representation, this tells you that the atoms is point at you. Dashed lines indicate that the molecule is point away from you and mean the same for all molecular representation.

Fischer Projections: convention used to depict a stereoformula in 2D without destroying the chirality. As a result there are limitations with what can be done with fischer projections.Note that each intersection has a carbon present.

Hawthorne Projections: usually used for sugars and shows a 3D view of the molecule. In these structures C and H atoms are implicit. 

[organiclearning-blog]

Partially Condensed: C-H bonds are not explicitly drawn and is only practical for small molecules.

Condensed: single bonds are not drawn and atoms are clustered together based on groups when applicable [e.g the 2 CH3 groups in isopropyl groups are written as (CH3)2.]

Molecular formula: does not provide structural details (e.g one formula can be long to multiple constitutional isomers which differ structurally).

bond lines: zigzag drawings were each point is a carbon and hydrogens are implied.