Question
Multi·dentate phosphine ligands are often notated with this Greek letter followed by the number of coordination sites they have. For 10 points each:
[10h] Name this Greek letter that is used to denote the denticity of ligands, or how many non-contiguous binding sites they have. Acetate ligands can be described as “[this letter]-2.”
ANSWER: kappa
[10m] While denticity describes non-contiguous binding sites, this other quantity denoted with the Greek letter eta describes the number of binding sites that are contiguous. Cyclo·penta·diene ligands have a value of five for this quantity.
ANSWER: hapticity
[10e] Two eta-five cyclo·penta·diene ligands are bound to an iron(II) (“iron-two”) center in this classic sandwich compound, the first-discovered metallocene.
ANSWER: ferrocene [accept Fc]
<JZ, Chemistry>
Summary
| 2023 ARCADIA at UC Berkeley | Premiere | Y | 2 | 20.00 | 50% | 100% | 50% |
| 2023 ARCADIA at Carleton University | Premiere | Y | 3 | 6.67 | 67% | 0% | 0% |
| 2023 ARCADIA at Claremont Colleges | Premiere | Y | 1 | 20.00 | 100% | 100% | 0% |
| 2023 ARCADIA at Indiana | Premiere | Y | 5 | 8.00 | 60% | 20% | 0% |
| 2023 ARCADIA at RIT | Premiere | Y | 2 | 10.00 | 50% | 50% | 0% |
| 2023 ARCADIA at WUSTL | Premiere | Y | 3 | 10.00 | 100% | 0% | 0% |