Question

After they are activated by trifluoroacetic acid, these compounds are the hydride source for ionic hydrogenation. Bifunctional coupling agents named for having these organic compounds as head groups are used to adhere polymers to inorganic surfaces. These compounds form adducts with active hydrogens to derivatize polar analytes before gas chromatography. (10[1])In a process named for these compounds, they self-assemble on surface-exposed (-5[1])oxygens to form a monolayer that end-caps chromatography columns and renders glass chemically inert. (-5[1])Chlorinated and branched examples of these compounds, such as TBSCl (-5[1])(“T-B-S-C-L”), form ethers (10[1]-5[1])in the most common method (10[1])to protect (10[1])alcohols. (10[1]-5[3])One of these compounds bearing four methyl groups (10[1])is assigned a chemical (10[1])shift of 0 ppm (10[1])in NMR. (10[1]-5[1])For 10 points, (-5[1])name these hydro·carbons that contain (-5[1])an atom of the element below carbon on the (10[1])periodic table. (10[3])■END■ (10[5]0[4])

ANSWER: silanes [or organosilanes; or organosilicon compounds; or silyl groups; accept hydrosilanes; accept chlorosilanes; reject “silanols,” “silyl ethers,” “siloxanes,” “silicon,” or “Si”]
<Chemistry>
= Average correct buzz position

Summary

2023 ACF Nationals04/22/2023Y2282%0%45%112.50

Buzzes

PlayerTeamOpponentBuzz PositionValue
Nikhil ChellamNorthwestern AChicago C4910
Geoffrey WuColumbia AIndiana A60-5
Adam FineChicago AGeorgia Tech A74-5
Ethan AshbrookMinnesota ANorth Carolina A84-5
Mazin OmerHarvard AMIT A86-5
Andrew HannaVanderbilt AMichigan A8610
Eric WolfsbergStanford ADuke A9110
Dan NiCornell BTexas A9310
Pranav SivaramOhio State AFlorida A9410
Paul LeeWUSTL ACornell A94-5
Isak JatoiSouth Carolina AWUSTL B94-5
JD KrothIowa State AYale B94-5
Caleb KendrickMaryland AChicago B10210
Matt SchiavonePurdue AImperial A10610
Vittal BhatNorth Carolina AMinnesota A11010
Vinu HariharUC Berkeley BColumbia B11210
S. A. ShenoyGeorgia Tech BMcGill A112-5
Swapnil GargUC Berkeley AToronto A115-5
Daniel MaYale ABrown A120-5
Jonathan LauJohns Hopkins AHouston A12910
Arya KarthikGeorgia Tech AChicago A13110
June YinWUSTL BSouth Carolina A13110
Alex AkridgeIndiana AColumbia A13110
Alex SchmidtPenn State AClaremont A1320
Joelle SmartRutgers AIllinois A1320
Ameya PhadnisRutgers BMinnesota B13210
Katherine LeiMIT AHarvard A13210
Jason HongBrown AYale A13210
Alan XieYale BIowa State A13210
Kevin ParkClaremont APenn State A1320
Yash MandaviaIllinois ARutgers A1320
Geoffrey ChenCornell AWUSTL A13210