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Fundamental Concepts in Organic Chemistry: Structure, Acidity, Conformation, and Stereochemistry

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Lewis Structure

  • Drawing the Lewis Structure for N2H4.
    04:12
  • How to use Organic Chemistry to make Lewis Structures easier.
    03:49

Formal Charges

  • Calculate the formal charges of ALL atoms.
    02:21
  • Calculating formal and net charge.
    01:34

Intermolecular Forces

  • How dipole-dipole forces work.
    01:46
  • How IMFs are related to melting and boiling points.
    03:08
  • How Van der Waals forces work.
    03:01

Bonding Preferences

  • What is the difference between valence and octet electrons?
    02:04
  • Understanding the hydrogen isotopes.
    08:32
  • What is a valence electron?
    02:14

Hybridization

  • How carbon creates 4 partially-filled orbitals.
    02:53
  • Bond sites, hybridization, and intermediate orbitals
    04:58
  • Introduction to the reactive intermediates.
    02:47

Molecular Geometry

  • Predict the hybridization and molecular geometry
    01:54
  • Molecular Geometry Explained.
    07:44

Sigma and Pi Bonds

  • Single bonds, double bonds, and triple bonds.
    06:00
  • Sigma bonds and pi bonds
    01:05
  • Sigma bonds and pi bonds
    00:59

Condensed Structural Formula

  • How to draw condensed mixed structures.
    05:21
  • How to interpret condensed structures.
    06:06

Functional Groups

  • Assigning Degrees to Alkyl Halides
    01:30
  • Why we need functional groups.
    01:49
  • The difference between aldehydes and ketones.
    03:08

Resonance Structures

  • How to draw a resonance hybrid.
    03:24
  • The rules you need for resonance:
    03:34
  • How to determine which structure is most stable.
    01:32

Acid and Base Definitions

  • Lewis vs. Bronsted-Lowry Definition
    07:46
  • The Bronsted-Lowry definition of acids and bases.
    00:54
  • Equilibrium constant and conjugates.
    02:11

pKa Values

  • Identifying pKa values
    07:45
  • The 12 pKa values you want to memorize (because they are important!).
    09:36

Factors Affecting Acidity

  • Which of the oxides is the most basic?
    00:30
  • The 3 factors that determine the strength of inductive effects.
    03:09
  • Using Inductive Effect to determine acidity
    01:54

Alkane Nomenclature

  • Naming the root chain
    01:02
  • Provide the IUPAC name for the following alkane
    07:08
  • The different parts of an IUPAC name
    03:43

Cycloalkanes

  • Name the following alkane
    00:53
  • Determining Root Name
    00:18
  • Determining Root Name
    00:34

Newman Projections – Conformational Energy

  • How to draw a Newman Projection Energy Diagram.
    07:27
  • How sigma bond rotation is visualized
    03:11
  • The energy states of 3 different Newman Projections.
    03:51

Newman Projections – Method

  • Step 6 to Drawing Newman Projections
    01:31
  • Step 5 to Drawing Newman Projections
    01:51
  • Step 3 to Drawing Newman Projections
    00:28

Barrier To Rotation

  • 4 Values You Should Memorize
    02:54
  • Determining energy cost of eclipsed interaction
    03:00

Cyclohexane – Chairs and Positions

  • What is a chair conformation?
    01:05
  • How chairs flip from one conformation to another
    02:22
  • How chairs flip from one conformation to another
    04:26

Cyclohexane – Determination of Cis and Trans

  • Is the following cyclohexane cis or trans?
    00:44
  • How to draw chairs.
    01:18
  • Is the following cyclohexane cis or trans?
    00:27

Equatorial Preference

  • Equatorial Preference
    04:02
  • Draw the following chair in the most stable conformation.
    03:17

Chair Flip

  • The 3 important factors when drawing chairs
    05:12

A-Values

  • Calculating Chair Equilibrium
    06:27

Decalin

  • How to determine the stability of a decalin.
    03:52
  • Draw the following decalin as a chair conformation in the most stable conformation.
    03:14

Types of Isomers

  • Determining when molecules are conformers.
    01:39
  • Determining when molecules are different.
    03:51
  • Determining when molecules are constitutional isomers.
    01:33

Chirality

  • Drawing Mirror Images and Determining Chirality
    03:24
  • What is chirality?
    05:10
  • Drawing Mirror Images and Determining Chirality
    03:44

Chirality Test 1 - Internal Line of Symmetry

  • Determining Chirality with Plane of Symmetry
    00:25
  • Determining Chirality with Plane of Symmetry
    01:10
  • How and when to use the internal line of symmetry test.
    01:25

Chirality Test 2 - Stereocenters

  • Determining Chirality using Stereocenter
    02:25
  • Determining Chirality using Stereocenter
    00:36
  • The difference between chiral and trigonal centers.
    02:38

Cahn-Ingold-Prelog Nomenclature

  • R and S Naming- Step 4
    03:07
  • Why stereoisomers need their own naming system.
    01:48
  • Determining Priorities
    01:19

Types of Stereoisomers

  • Determine total number of stereoisomers
    00:49
  • How to predict the total number of stereoisomers.
    01:03
  • Draw stereoisomers and determine relationship
    07:41

Meso Compounds

  • Defining meso compounds.
    01:40
  • The 3 rules of meso compounds.
    04:10
  • Which of the following molecules are meso?
    03:44

Chirality Test 3 - Disubstituted Cycloalkanes Shortcuts

  • Is the following disubstituted cyclobutane chiral?
    00:35
  • Three types of disubstituted cycloalkanes
    03:52
  • Is the following disubstituted cyclopropane chiral?
    00:22

Isometric Relationships

  • Same atoms, same connectivity, 1 chiral center.
    01:40
  • Same atoms, same connectivity, 1 or more trigonal centers.
    02:05
  • Different atoms or different connectivity.
    01:41