CRYSTAL CHEMISTRY OF URANYL MOLYBDATES. VII. AN IRIGINITE-TYPE SHEET OF POLYHEDRA IN THE STRUCTURE OF [(UO2)Mo2O7(H2O)2]
Bibliographic record
Abstract
Nous avons synthetise un nouveau molybdate hydrate d'uranyle, [(UO 2 )Mo 2 O 7 (H 2 O) 2 ], par voie hydrothermale. Les cristaux sont longs, jaune fonce, et macles sur (100). Nous en avons resolu la structure par methodes directes et nous l'avons affinee en utilisant les facteurs F2 de toutes les reflexions uniques prelevees avec rayonnement monochromatise MoKa et un detecteur a couplage de charges CCD. Il s'agit d'un compose monoclinique, groupe spatial C2/c, a 35.071(6), b 6.717(1), c 11.513(2) A, β 90.069(6)°, V 2712.0(8) A 3 , Z = 12, Rl = 0.055, S = 0.91. Les deux cations U 6 + symetriquement distincts font partie d'ions uranyle, (UO 2 ) 2 + , qui sont coordonnes par cinq atomes d'oxygene agences aux coins equatoriaux de bipyramides pentagonales. Les trois cations Mo 6 + symetriquement independents sont coordonnes a cinq atomes d'oxygene et un groupe H 2 O dans des agencements octaedriques difformes. Les bipyramides pentagonales (UO 2 )O 5 et les octaedres MoO 5 (H 2 O) sont lies par partage de coins et d'aretes, pour donner des feuillets [(UO 2 )Mo 2 O 7 (H 2 O) 2 ] 0 electrostatiquement neutres et fondes sur la topologie de l'anion dans l'iriginite. Contrairement au cas de l'iriginite, [(UO 2 )Mo 2 O 7 (H 2 O) 2 ](H 2 O), la structure ne contient pas de groupes H 2 O entre les feuillets. Ceux-ci sont lies l'un a l'autre par liaisons hydrogene impliquant des groupes H 2 O faisant partie des octaedres MoO 5 (H 2 O). Le compose [(UO 2 )Mo 2 O 7 (H 2 O) 2 ], hydrate inferieur de l'iriginite, est stable a des conditions basiques, tandis que les conditions plus fortement acides favorisent generalement l'iriginite.
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 | 0.000 | 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 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.003 | 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".