Sr2B5O9OH{middle dot}H2O, A SYNTHETIC BORATE RELATED TO HILGARDITE
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Bibliographic record
Abstract
The crystal structure of a new strontium borate, Sr 2 B 5 O 9 OH·H 2 O, space group C 2, a 10.2571(6), b 8.0487(2), c 6.4043(4) A, β 127.860(2)°, Z = 2, has been determined by X-ray diffraction using a single crystal grown under hydrothermal conditions. The structure is closely related to that of the zeolite-like hilgardite minerals, Ca 2 B 5 O 9 Cl·H 2 O, in particular that of triclinic hilgardite-1 A . The main structural differences are a more symmetrical conformation of the [B 5 O 12 ] 9− pentaborate chains and a random distribution of OH − and H 2 O in Sr 2 B 5 O 9 OH·H 2 O, that result in the monoclinic symmetry. The role of the Sr cations in determining the conformation of the pentaborate chain is discussed by comparison with hilgardite-1 A .
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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 | 0.001 | 0.000 |
| 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 | 0.001 |
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 it