Introduction to Resonance
…mention a second key factor that can complicate the analysis of electron densities: the presence of double bonds (π bonds). In this post we will see how combining an understanding…
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3 Trends That Affect Boiling Points
…To Use Curved Arrows To Interchange Resonance Forms Hybrid Orbitals and Hybridization P.S. New! Check out this free 3-page handout on solving common boiling point exam problems! MOC_Boiling_Point_Handout (PDF) …
Read moreThe Four Intermolecular Forces and How They Affect Boiling Points
…has an electronegativity of 2.2 (compare to 0.9 for Na and 0.8 for K) these bonds are not as polarized as purely ionic bonds and possess some covalent character. However,…
Read moreA Key Skill: How to Calculate Formal Charge
…in the rest for the examples below. Click to Flip If that went well, you could try filling in the formal charges for all of the examples in this table….
Read moreTake “Don’t Memorize!” with a grain of salt
…In short: vocabulary, conventions, and results obtained by experiment. Anything that answers the question “what?”is something that can be memorized. Where memorization doesn’t help as much is in answering the…
Read moreThe Cope and Claisen Rearrangements
…reactions with examples, mechanisms, and applications. Table of Contents The Cope Rearrangement: Example And Mechanism The Cope Rearrangement Is An Equilibrium Cope-ing With Ring Strain The Oxy-Cope Rearrangement The Claisen…
Read moreNucleophilicity vs. Basicity
Understanding The Differences Between Nucleophilicity vs Basicity Following up on Nucleophiles and Electrophiles, here’s a common question students have about nucleophilicity: 1. What’s the difference between nucleophilicity and basicity? Great,…
Read moreOrganic Chemistry Study Tips: How to use a “Study Buddy”
…This is your copy. Now draw out the starting material and the product, and give it to your partner. It looked easy when you saw all the answers in front…
Read moreCurved Arrows (2): Initial Tails and Final Heads
…Here’s two more examples – an example with three arrows, and an exaggerated (but plausible) example with six (!!!) arrows. Notice that no matter how many arrows are drawn, only…
Read moreCurved Arrows (for reactions)
…saved for later. See post on How To Calculate Formal Charge 4. Example #1: Lone Pair → Bond The first example shows the simplified example of a lone pair on…
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