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]
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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
| Purdue | Amartya Senpai Notice Me | 0 | 0 | 0 | 0 |
| Epic Games | Maryland B- | 0 | 10 | 0 | 10 |
| Chicago A | Michigan | 10 | 0 | 10 | 20 |
| Mojo Shojo | Illinois | 10 | 0 | 0 | 10 |
| OSU | Northwestern | 0 | 10 | 0 | 10 |
| WUSTL | Chicago B | 10 | 10 | 0 | 20 |