η<sup>1</sup>- and η<sup>5</sup>-Indenyl and Cyclopentadienyl Tri<i>-tert</i>-Butylphosphoraneiminatotitanium Complexes
Bibliographic record
Abstract
The compounds (indenyl)Ti(NP- t -Bu 3 )Cl 2 ( 4 ), Cp 2 Ti(NP- t -Bu 3 )Cl ( 6 ), (indenyl) 2 Ti(NP- t -Bu 3 )Cl ( 7 ), Cp(indenyl)Ti(NP- t -Bu 3 )Cl ( 8 ), Cp 3 Ti(NP- t -Bu 3 ) ( 9 ), (indenyl) 3 Ti(NP- t -Bu 3 ) ( 10 ), and Cp(indenyl) 2 Ti(NP- t -Bu 3 ) ( 11 ) are readily derived from reaction with (dme)NaCp or Li(indenyl) with CpTi(NP- t -Bu 3 )Cl 2 ( 1 ) or 4 in the appropriate stoichiometry. X-ray crystallography studies of (indenyl)Ti(NP- t -Bu 3 )Me 2 ( 5 ) and 7 − 11 are reported. In the case of 6 and 9 two cyclopentadienyl rings are bound to the metal in a η 5 -bonding mode, whereas in 7, 8, 10, and 11 one of the cyclopentadienyl or indenyl ligands is bound in an η 5 mode and the remainder in an η 1 -fashion. In the case of 10, temperature-dependent 1 H NMR spectra infer a η 5 -η 1 ligand exchange process with an approximate barrier of 8−9 kcal/mol. Steric crowding appears to be the major factor determining the binding modes of the cyclopentadienyl and indenyl ligands. These structural data result in a view of the phosphoraneiminato ligand as a sterically demanding, four-electron donor ligand.
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 distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.002 | 0.002 |
| Meta-epidemiology (broad) | 0.002 | 0.001 |
| Bibliometrics | 0.001 | 0.002 |
| Science and technology studies | 0.001 | 0.002 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.070 | 0.001 |
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; both teacher heads agree on what is shown here.
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".