Pd<sup>II</sup>, Zn<sup>II</sup> and Ag<sup>I</sup> Complexes of Tetrakis(<i>N</i>‐7‐azaindolyl)benzene: Variation of Bonding Modes, Extended Structures and Luminescence
Bibliographic record
Abstract
Abstract Pd II , Ag I and Zn II complexes of tetrakis(7‐azaindolyl)benzene (ttab), [(PdCl 2 ) 2 (ttab)] ( 1 ), [(ZnCl 2 ) 2 (ttab)] ( 2 ), [Ag(NO 3 )] 2 (ttab) ( 3a ) and [Ag(NO 3 )(DMSO)] 2 (ttab) ( 3b ) were synthesized and fully characterized by NMR spectroscopy, single‐crystal X‐ray diffraction and elemental analyses. The ttab ligand in these complexes displays two different bonding modes. In the Pd II and Zn II complexes, the ttab ligand chelates to the metal center via two ortho 7‐azaindolyl groups (the ortho mode). In contrast, in the Ag I complex, it chelates to the Ag I ion via two meta 7‐azaindolyl groups (the meta mode). In the solid state, molecules of 1 and 2 form grid‐like extended structures that host solvent molecules such as DMSO and CH 2 Cl 2 . Compound 3a appears to be a coordination polymer and can be converted into compound 3b when dissolved in DMSO. A hydrogen bonded complex [Zn(O 2 CCF 3 ) 2 (H 2 O) 2 ](ttab) ( 4 ), which displays an unusual hydrogen bonded helical chain structure in the solid state, was also characterized. Except for compound 1 , these new compounds all emit blue light when irradiated by UV radiation. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)
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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 | 0.002 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
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 teacher head, 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".