Hydrothermal Synthesis, Structure, and Magnetic Properties of a Layered Organically Templated Uranium Aquofluoride: [C<sub>5</sub>H<sub>14</sub>N<sub>2</sub>][U<sub>2</sub>F<sub>10</sub>(H<sub>2</sub>O)]
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Bibliographic record
Abstract
Application of a compositional space diagram to the UO 3 /HF/homopiperazine (C 5 H 12 N 2 ) system at 180 °C in aqueous media has allowed for the isolation of a unique organically templated U(IV) aquofluoride, [C 5 H 14 N 2 ][U 2 F 10 (H 2 O)] ( AU2 - 3 ) that has been characterized by single-crystal X-ray diffraction, elemental analysis, and magnetic susceptibility measurements. Crystallographic data: AU2 - 3, monoclinic, space group P 2 1 / m, a = 8.332(4) Å, b = 7.186(3) Å, c = 10.812(9) Å, β = 95.07(6)°, Z = 2. The structure of AU2 - 3 consists of UF 9 and UF 8 (H 2 O) tricapped trigonal prisms that share two edges to form [UF 4 F 4/2 (H 2 O)] and [UF 5 F 4/2 ] chains extending along the b direction. These chains are then cross-linked by face-sharing of the tricapped trigonal prisms to yield [U 2 F 10 (H 2 O)] 2 - layers. These layers contain small channels running down the a axis that are partially filled with coordinated water molecules. The layers are separated by diprotonated homopiperazine cations that form strong hydrogen-bonding networks. The magnetic susceptibility at temperatures above 150 K reveals a θ value of −15 K and an effective moment of 3.68 μ B /U(IV), while low-temperature measurements suggest the presence of a nonmagnetic ground state with a linear isothermal magnetization at 2 K and a temperature-independent susceptibility of 0.088 emu/fu (fu ≡ formula unit) below 8 K.
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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 | 0.001 | 0.002 |
| Meta-epidemiology (narrow) | 0.005 | 0.005 |
| Meta-epidemiology (broad) | 0.004 | 0.001 |
| Bibliometrics | 0.000 | 0.003 |
| Science and technology studies | 0.002 | 0.002 |
| Scholarly communication | 0.001 | 0.002 |
| Open science | 0.004 | 0.002 |
| Research integrity | 0.004 | 0.005 |
| 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 it