The Cyclohexane Chair Flip
…complex 1H NMR spectrum. At low temperatures interconversions are slow; the chemical shifts of the axial and equatorial protons are resolved, and complex spin-spin couplings occur. At -100 °C, however,…
Read more…complex 1H NMR spectrum. At low temperatures interconversions are slow; the chemical shifts of the axial and equatorial protons are resolved, and complex spin-spin couplings occur. At -100 °C, however,…
Read moreThese quizzes will test your understanding of molecular structure and bonding. You will be expected to be able to calculate formal charge, predict bond angles, draw in “hidden” lone pairs,…
Read moreThese questions will test your knowledge of the key trends that govern the relative ordering of boiling and melting points. Quiz count: 17 Quiz#: 567 Click to Flip Quiz#:1237 Click…
Read more…adamantane was thought to be relatively “strain-free”. (Adamantane was a pet topic of his, as one of his most highly-cited papers is a 1-page communication in JACS on the simple…
Read more…Organic Chemistry Really Is Shit A few years ago I remember having a discussion about the color of poo. If you were to eat items that were completely clear and…
Read more…time and effort into the class that was necessary to do well and trusted that it was enough, but exams (especially those that comprise 40% of one’s grade) get most…
Read more…several examples of how to do this. Table of Contents A Quick Quiz (On Bond Dissociation Energy) Key Principle On Orbital Hybridization And Bond Strengths: The Greater The s-character, The…
Read more…four single bonds Carbon with four single bonds adopts a tetrahedral geometry (ideal bond angle: 109.5°) Compared to other atoms on the periodic table, [O, N, S, Si for example]…
Read more…up! “. In the example above, the diene and dienophile can come together two ways: “head to head” such that the methyl group on the diene and the C=O bond…
Read more…be neutral. (If the compound has a charge, you adjust the oxidation states accordingly so that their sum equals the charge). 1. Calculating Oxidation States In Inorganic Compounds Now here’s…
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