Round 5: Tossup 18
This non-alkene ligand adds to an alkyl chain in the textbook example of a migratory insertion. The starting material for the Cativa process consists of Iridium bound to two iodides and two of these ligands. Due to extensive backbonding, this molecule has the highest delta in the spectrochemical series. In the water gas shift reaction, this molecule reacts with (*) water. This isoelectronic ligand to cyanide is a common source of carbonyls in industrial processes. This toxic molecule is released by automobiles inside closed garages due to incomplete combustion. For 10 points, name this triply-bonded molecule with formula CO. ■END■
ANSWER: carbon monoxide [accept carbonyl ligand before “carbonyl” or CO before “CO”; reject partial answers]
<Science - Chemistry, Rohan Ganeshan> | VAULT II Packet 05
= Average correct buzzpoint
Buzzes
| Player | Team | Opponent | Buzzpoint | Value |
|---|---|---|---|---|
| Aadi Pudasaini | Lexington A | Waltham B | 37 | 15 |
| Willow Bhargava | Waltham A | Lexington B | 59 | 10 |
| Andrew Gao | Belmont A | Belmont B | 82 | 10 |
| Alex Kulik | Mansfield B | Wellesley | 87 | 10 |
Summary
| Tournament | Edition | Match | Heard | Conv. % | Power % | Neg % | Avg. Buzz |
|---|---|---|---|---|---|---|---|
| VAULT II at Georgia Tech | 2026-01-24 | ✓ | 6 | 100% | 83% | 33% | 49.67 |
| Triangle Cup | 2026-03-13 | ✓ | 2 | 100% | 0% | 0% | 80.00 |
| VAULT II at Eden Prairie HS | 2026-03-13 | ✓ | 3 | 100% | 67% | 0% | 53.33 |
| VAULT II at McGill | 2026-03-13 | ✓ | 4 | 100% | 0% | 50% | 91.00 |
| VAULT II at UCSB | 2026-03-13 | ✓ | 5 | 100% | 0% | 0% | 73.80 |
| VAULT II Northern UK | 2026-04-24 | ✓ | 3 | 100% | 0% | 33% | 87.67 |
| VAULT II Southern UK | 2026-04-24 | ✓ | 4 | 100% | 0% | 25% | 84.50 |
| VAULT II at Harvard | 2026-04-30 | ✓ | 4 | 100% | 25% | 0% | 66.25 |
| VAULT II at MINT | 2026-06-19 | ✓ | 5 | 80% | 0% | 40% | 87.75 |
| VAULT II Stanford Online | 2026-07-17 | ✓ | 8 | 100% | 50% | 13% | 58.38 |