Solid-State <sup>69</sup>Ga and <sup>71</sup>Ga NMR Study of the Nanoscale Inorganic Cluster [Ga<sub>13</sub>(μ<sub>3</sub>-OH)<sub>6</sub>(μ<sub>2</sub>-OH)<sub>18</sub>(H<sub>2</sub>O)<sub>24</sub>](NO<sub>3</sub>)<sub>15</sub>
Bibliographic record
Abstract
Solid-state 71 Ga and 69 Ga NMR was used to probe the structure of the hydroxo-aquo cluster, [Ga 13 (μ 3 -OH) 6 (μ 2 -OH) 18 (H 2 O) 24 ](NO 3 ) 15, envisioned as a solution-processable material for thin film electronics. This species, termed Ga 13, is made up of three types of 6-coordinate gallium sites, with bridging OH groups and H 2 O species decorating the outer edges. Solid-state NMR at two magnetic fields (13.9 and 21.1 T) of these quadrupolar nuclei, in conjunction with modeling, demonstrates that these sites are best represented as distorted octahedra, exhibiting a wide range of distinct quadrupolar couplings and asymmetry parameters. This information is critical for analyses of the local coordination environment for gallium in related gallium-oxide films, and this work adds to the growing body of evidence that gallium solid-state NMR is a useful tool for structural analyses.
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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 | 0.006 | 0.003 |
| Meta-epidemiology (narrow) | 0.010 | 0.011 |
| Meta-epidemiology (broad) | 0.012 | 0.004 |
| Bibliometrics | 0.002 | 0.005 |
| Science and technology studies | 0.004 | 0.005 |
| Scholarly communication | 0.002 | 0.004 |
| Open science | 0.009 | 0.007 |
| Research integrity | 0.007 | 0.007 |
| Insufficient payload (model declined to judge) | 0.000 | 0.002 |
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".