PBS
Will A New Neutrino Change The Standard Model?
Since the discovery of the Higgs boson, physicists have searched and searched for any hint of new particles. That search has been fruitless. Until, perhaps, now. Today on Space Time Journal Club we'll look at a paper that reports a...
SciShow
How Space Might Have Shaped Our DNA
The DNA inside our cells almost exclusively twists in one direction, but the reason for this might be out of this world!
TED-Ed
TED-ED: What is chirality and how did it get in my molecules? - Michael Evans
Improve your understanding of molecular properties with this lesson on the fascinating property of chirality. Your hands are the secret to understanding the strange similarity between two molecules that look almost exactly alike, but are...
Curated Video
Biphenyls & Optical Isomerism: When Planes Matter
Biphenyls are compounds consisting of two benzene rings connected by a single bond. In certain biphenyls, bulky substituents on the ortho positions of the rings can prevent free rotation around the bond, locking the rings in different...
Curated Video
Allenes and Optical Activity: A Surprising Twist!
Allenes are compounds with a unique structure characterized by two adjacent double bonds (C=C=C). Despite having no traditional chiral centers, certain substituted allenes can exhibit chirality and optical activity due to their rigid,...
Curated Video
Symmetry and Optical Activity: Do Your Molecules Have It?
Symmetry and optical activity are intricately linked in organic molecules. A molecule is optically active if it can rotate the plane of polarized light. Optical activity arises from the molecule’s lack of symmetry—specifically, its...
Curated Video
Chirality in Organic Compounds: Asymmetry in Action
Chirality refers to molecules that have a non-superimposable mirror image due to an asymmetric carbon atom. These chiral compounds are vital in many biological systems, as their mirror images often have different effects
Next Animation Studio
Cosmic rays may be the source of biological ‘handedness’
Interaction between cosmic rays and early life-forms may be responsible for the fundamental property of chirality, or “handedness,” in biological molecules.
Professor Dave Explains
Stereochemistry: Meso Compounds, Diastereomers
Defining meso compounds, inversion centers, and diastereomers.
Professor Dave Explains
Practice Problem: Hydrogenation, Isomerism, and Cyclohexane Chairs
For this one we need to understand the stereospecificity of hydrogenation over platinum metal, stereochemical relationships, and the relative stability of cyclohexane chair conformations.
Professor Dave Explains
Practice Problem: IUPAC Nomenclature and Stereochemistry
For this one we will have to be able to interpret IUPAC nomenclature to draw molecular structure, including absolute configuration using the Cahn-Ingold-Prelog convention.
Professor Dave Explains
Chiral Molecules With No Chiral Centers
Looking at interesting molecules in virtual reality that possess no chiral centers.
Professor Dave Explains
Stereochemistry: Enantiomers
Defining stereochemistry and enantiomeric relationships.
Khan Academy
Introduction to Chirality, Stereochemistry, Organic chemistry
An introduction to chirality and whether molecules can be superimposed or not. The terminology for those molecules is given along with the relevance of that characteristic.
Khan Academy
Khan Academy: Introduction to Chirality
In this video lecture learn the meaning of chiral and how molecules and atoms are chiral. [6:45]
Khan Academy
Khan Academy: Stereochemistry: Drawing Enantiomers
A video lecture exploring how to draw enantiomers. Understand that enantiomers are chiral molecules that are mirror images of each other. [9:29]
Khan Academy
Khan Academy: Chirality and the R,s System: Chiral Examples 1
Looks at examples of chemicals to identify any chiral atoms, and to determine if it is a chiral molecule.
Khan Academy
Khan Academy: Cahn Ingold Prelog System for Naming Enantiomers
Explains the proper method of naming Enantiomers.
Khan Academy
Khan Academy: Chirality and the R,s System: R,s (Cahn Ingold Prelog) System
Understand the R/S System of naming chiral centers based on the Cahn Ingold Prelog priority rules. [11:08]
Khan Academy
Khan Academy: Chirality and the R,s System: Chiral Examples 2
Chiral examples are exposed for clearer understanding of chirality. Chiral molecules are molecules that have asymmetric mirror images. [10:19]
Khan Academy
Khan Academy: Chirality and the R,s System: Introduction to Chirality
Provides an introduction to chirality. [6:45]
Khan Academy
Khan Academy: Science: Organic Chemistry: Stereochemistry: Chirality: Identifying Chirality Centers
Explains how to determine which atoms in a molecule are chirality centers. [8:08]