1 / 8

Chemical Ideas 3.5

Chemical Ideas 3.5. Geometric Isomerism (different geometries). Isomerism. Structural isomerism. Stereoisomerism. Geometric isomerism. Optical isomerism. Types of isomerism. Build these models. trans but-2-ene. Cis but-2-ene. Two isomers are not interchangeable.

gram
Download Presentation

Chemical Ideas 3.5

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Chemical Ideas 3.5 Geometric Isomerism (different geometries)

  2. Isomerism Structural isomerism Stereoisomerism Geometric isomerism Optical isomerism Types of isomerism

  3. Build these models trans but-2-ene Cis but-2-ene

  4. Two isomers are not interchangeable. • Carbon 2 & 3 joined by double bond. • No free rotation. • Bonds would have to be broken and reformed. • +270 kJ mol-1 energy needed to break this bond. • Insufficient energy available at room temperature.

  5. Cis but-2-ene cis... • Different names needed to identify isomers. • Substituent groups on the same side of double bond. • Cis but-2-ene

  6. trans but-2-ene ...and trans. • “trans” means other side or cross over e.g. trans Atlantic, transplant, trans…..! • Substituents on opposite sides of double bond.

  7. Different compounds- different properties.

  8. Time to think and apply what we have learned! • How are the structures of nerol and geraniol related? • How many moles of H2 would be needed to saturate one mole of geraniol? • How are nerol and geraniol related to citronellol? • How are the structures of nerol and geraniol related to linalool?

More Related