Iridium, Tris[2-(2-pyridinyl-κ<i>N</i>)phenyl-κ<i>C</i>]-, (OC-6-22)-iridium
Bibliographic record
Abstract
[94928-86-6] C33H24IrN3 (MW: 654.78) InChI = 1S/3C11H8N.Ir/c3*1-2-6-10(7-3-1)11-8-4-5-9-12-11;/h3*1-6,8-9H; InChIKey = QKBWDYLFYVXTGE-UHFFFAOYSA-N (photosensitizer, photoredox catalysis, OLED, triplet-state luminescence) Alternative Names: Ir(ppy)3, tris[2-phenylpyridinato-C2,N]iridium(III). Physical Data: UV (ϵ [×103 M−1cm−1]) in DCM = 283 (4.9), 380 (4.1), 405 (4.0), 455 (3.5), 490 (3.1)1, 2; λem = 516 nm in DCM; E1/2 Red = (2.77 V; E1/2 Ox 0.26 V (in THF or DCM, respectively, Ref. vs. ferrocene)3; E1/2 Red = (1.73 V vs. SCE4; mp 328 °C. Solubility: acetonitrile, dichloromethane, THF, ethyl acetate, toluene, and DMF. Form Supplied in: commercially available. Complex is a yellow solid. Preparation Methods: prepared from the reaction of Ir(acac)3 with 3 equiv of H–ppy in degassed glycerol at reflux for 10 h, followed by precipitation with 1 M HCl (eq 1).5 Alternatively, reaction of cis-[Ir(ppy)2(H2O)2]OTf6 and 2-(2-boronic acid phenyl)pyridine under basic conditions at room temperature has been reported 7 (1) NMR data in the literature reports the 1H NMR spectra for the title compound in CD2Cl2 as showing eight chemical shifts in the range of 6.7–8.0 ppm, and the 13C NMR spectrum showing 11 resonances, 3 of which remain unsplit in SFORD measurements.8 Purification: silica gel chromatography in DCM to remove dark colored impurities.9 Handling, Storage, and Precaution: store under inert atmosphere in the dark (sensitive to light). Keep away from oxidizing agents. Upon visible light excitation of Ir(ppy)3 (ppy = 2-phenyl pyridine), the resulting metal-to-ligand charge transfer (MLCT) excited-state species [Ir(ppy)3]* is a strong single-electron reductant and can be quenched with an acceptor to form [Ir(ppy)3+]. The oxidized species can be reduced back by an electron donor to regenerate the photocatalyst (eq 2). (2) The complex is also used as an organic light-emitting diode (OLED)10-14 and an oxygen sensor.15, 16
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.002 | 0.000 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.019 | 0.009 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".