Angular Arenediethynyl Complexes of Gold(I)
Bibliographic record
Abstract
Alkynylgold(I) complexes have been prepared from the angular bis(alkyne) MeC 6 H 3 -3,5-(CCH) 2, in which the alkyne units are rigidly fixed at an angle of 120° to each other. Reaction with [AuCl(SMe 2 )] and base yields the shock-sensitive, insoluble compound [{MeC 6 H 3 -3,5-(CCAu) 2 } n ] ( 2 ), which reacts with isocyanide, phosphine, or phosphite ligands (L) to give [MeC 6 H 3 -3,5-(CCAuL) 2 ] ( 3; L = P(OPh) 3, P(OMe) 3, PPh 3, PMePh 2, t -BuNC, MeNC). The complexes with L = P(OMe) 3, PMePh 2 exist in the solid state as infinite one-dimensional ribbon structures in which neighboring molecules are associated through secondary gold−gold bonding. Complexes with diisocyanide ligands 1,4-C 6 R 4 (NC) 2 (R = H, Me) have the formula [{MeC 6 H 3 -3,5-(CCAu) 2 (μ-LL)} n ] and are insoluble in organic solvents; they are suggested to have a zigzag polymeric structure. In contrast, complexes with diphosphine ligands (CH 2 ) n (PPh 2 ) 2 ( n = 1−6) are soluble and are suggested to be the cyclic tetragold(I) complexes of formula [{MeC 6 H 3 -3,5-(CCAu) 2 (μ-LL)} 2 ]; the ring size varies from 24 to 34, depending on n .
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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) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 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; 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".