Question

One of these functional groups acts as a pendant ligand in the secondary coordination sphere in the hangman effect. Six ligands containing this functional group bridge three palladium(II) (“two”) atoms in a triangle in an activated catalyst for the Heck reaction. This group coordinates the metals in the “paddlewheel” secondary binding units of HKUST-1 (“H-kust-one”). Metalloenzyme ligands containing this functional group in an amino acid side chain can switch from monodentate to bidentate. (-5[1])These functional groups lie at each end in the most common MOF (“moff”) linkers. The (-5[1])electrostatic repulsion (10[1])between caps containing these functional groups stabilizes (10[1])colloidal gold. (10[1])Two amines and four of these functional (10[1])groups chelate (“KEE-late”) a metal in EDTA. (-5[1])This functional group has a pKa of 5 and is (10[1])found in the side chain (-5[1])of the amino acids symbolized D and E. (10[4])For (10[1])10 (10[1])points, (-5[1])name this negatively charged functional group found in citrate (10[1])and acetate. (10[3])■END■ (10[3]0[4])

ANSWER: carboxylate [or carboxylic acid; or carboxyl group; or CO2−; or COO−; or COOH; accept dicarboxylic acids or dicarboxylates; prompt on acids; prompt on acetates; reject “carbonyl” or “hydroxyl” or “alcohol”] (The second sentence refers to palladium acetate.)
<Chemistry>
= Average correct buzz position

Summary

2023 ACF Nationals04/22/2023Y2186%0%24%127.72

Buzzes

PlayerTeamOpponentBuzz PositionValue
Frederick Rivas-GiorgiYale BFlorida A70-5
Ethan AshbrookMinnesota AHarvard A84-5
Jason HongBrown ACornell B8610
Nikhil ChellamNorthwestern AStanford A9310
Isak JatoiSouth Carolina APurdue A9510
Vivek SasseChicago BNorth Carolina A10210
Connor BlakeChicago CIllinois A108-5
Pranav SivaramOhio State AColumbia A11810
Alex LiGeorgia Tech APenn State A123-5
Shahar SchwartzUC Berkeley AJohns Hopkins A13110
Benjamin WeinerMinnesota BNYU A13110
Daniel SheinbergYale AMcGill A13110
Vinu HariharUC Berkeley BWUSTL B13110
Vishal KanigicherlaPenn AHouston A13210
Jacob EgolDuke AFlorida B13310
Noah ChenColumbia BWUSTL A134-5
Nathan SheffieldMIT AMichigan A14310
S. A. ShenoyGeorgia Tech BClaremont A14510
Mazin OmerHarvard AMinnesota A14510
Tracy MirkinFlorida AYale B14510
Cyrus ZhouWUSTL AColumbia B14610
Gio MazzeoVirginia AImperial A14610
Joelle SmartRutgers AMaryland A1460
Ameya PhadnisRutgers BTexas A14610
Ani PerumallaPenn State AGeorgia Tech A1460
Yash MandaviaIllinois AChicago C1460
Caleb KendrickMaryland ARutgers A1460