Bibliographic record
Abstract
Rhombohedral crystal phase of CuCN forms irreversibly on heating a mixture of its orthorhombic and monoclinic phases to 593 K. In its space group, $R3m$ $(a=b=0.6026 \mathrm{nm},$ $c=0.4823 \mathrm{nm},$ $\ensuremath{\alpha}=\ensuremath{\beta}=90\ifmmode^\circ\else\textdegree\fi{},$ $\ensuremath{\gamma}=120\ifmmode^\circ\else\textdegree\fi{},$ $Z=3,$ ${V}_{0}=0.1516 {\mathrm{nm}}^{3},$ and ${D}_{x}=2.94 {\mathrm{g}/\mathrm{c}\mathrm{m}}^{3}),$ positions of C and N atoms are disordered, and therefore orientations of the CN group in the (N-Cu-C) chain structure are random. Its heat capacity increases in the manner of a sigmoid shape over the 350--380 K range, analogous to that observed on kinetic unfreezing of a canonical glass, as does that of a mixture of crystal phases obtained by flocculation process. The CuCN phase appears as the simplest orientational glass whose state is trapped in a deep minimum with a corrugated bottom, and each corrugation corresponding to one configurational excitation.
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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 | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 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 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".