Question
Unstable examples of these molecules can be transiently made more stable for detection in the “spin trapping” technique. For 10 points each:
[10e] Name these molecules, which can react with themselves to form one molecule in a recombination reaction. These molecules can mediate chain reactions with initiation, propagation, and termination steps.
ANSWER: free radicals
[10m] This phenomenon creates a trend in which tertiary radicals are more stable than secondary radicals, which are more stable than primary radicals. This phenomenon also creates a similar stability trend in carbocations.
ANSWER: hyperconjugation [reject “conjugation,” if someone tries to protest that “conjugation” should be promptable give them like A neg 20 instead for thinking they can do That]
[10h] In this effect, a radical is sandwiched by an electron-withdrawing and an electron-donating group, giving the radical remarkable thermodynamic stability due to electron delocalization.
ANSWER: captodative effect [accept merostabilization from a player born in the 1960s or earlier; prompt on push-pull effect]
<BB>
Summary
| 2023 BHSU @ Berkeley | 03/18/2023 | Y | 3 | 6.67 | 33% | 33% | 0% |
| 2023 BHSU @ Maryland | 03/11/2023 | Y | 3 | 3.33 | 33% | 0% | 0% |
| 2023 BHSU @ Northwestern | 02/25/2023 | Y | 6 | 11.67 | 50% | 50% | 17% |
| 2023 BHSU Online | 04/15/2023 | Y | 4 | 15.00 | 100% | 50% | 0% |
| 2023 BHSU @ Sheffield | 04/15/2023 | Y | 2 | 0.00 | 0% | 0% | 0% |
| 2023 BHSU @ Waterloo | 04/15/2023 | Y | 3 | 13.33 | 100% | 33% | 0% |
| 2023 BHSU @ Yale | 04/08/2023 | Y | 3 | 16.67 | 67% | 100% | 0% |
Data
| Cornell C++ | What is BH! And you are asking me? BHSU | 10 | 0 | 0 | 10 |
| Cornell B- | Houston and Friends | 10 | 10 | 0 | 20 |
| Hutto Hippos | Rollin in from Sturgis, The Cheyne Gang | 10 | 10 | 0 | 20 |
| The Enrique Trastamara Military Academy B | Dr. Christopher Manners, MD – Samarra, Iraq | 10 | 0 | 0 | 10 |