Vineeth V.T., Divya R., Bijini B.R. et al. · Journal of Inorganic and Organometallic Polymers and Materials · 2021 · 426-436
Open a family to keep every result attached to its sample, method and conditions.
Paraphrased for this database from the authors’ stated interpretations — never quoted verbatim — and kept separate from reported measurements.
CuB crystals show stronger antibacterial activity against gram-negative bacteria than gram-positive bacteria, with the largest reported CuB zone for Klebsiella Pneumonia.
Caveat: The assay reports inhibition zones only; no replicate statistics, MIC values, or cytotoxicity data are given.
434 · 3.8 Anti-bacterial Activity · Table 6 · Linked to 4 structured results
CuB is presented as a promising photoactive/luminescent material with blue-light emission under 320 nm excitation.
Caveat: No quantum yield, lifetime, stability, or device-level photophysical performance is reported.
435 · 4 Conclusion · Figures 14-15 · Linked to 4 structured results
The paper does not report first-hand electrical transport, thermoelectric, electrochemical, or porosity data for CuB.
Caveat: Optical conductivity is calculated as an optical parameter from reflectance/absorption equations and should not be treated as electrical conductivity.
432-433 · 3.6 UV-Vis NIR Spectral Studies · Figures 11-13
CuB is assigned as an orthorhombic copper barbiturate crystal with space group Fdd2 and distorted square pyramidal Cu coordination.
Caveat: The article calls the compound a MOF, but the described crystal chemistry is a copper barbiturate coordination complex stabilised by hydrogen bonding.
429 · 3.4 Single Crystal X-Ray Diffraction Studies · Table 1, Figure 4 · Linked to 7 structured results
Hall-Williamson analysis indicates negligible lattice strain, with line broadening dominated by crystallite-size effects.
Caveat: The analysis is based on a plotted linear fit; no full peak-width table or uncertainty is reported.
431 · 3.5.1 Hall-Williamson Analysis · Figure 8 · Linked to 1 structured result
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| Copper barbiturate crystal (CuB); copper complex of 2,4,6-trioxypyrimidine/barbituric acid | C8H10CuN4O9Cu(II) centre pentacoordinated to oxygen atoms from two barbituric acid ligands and three water molecules · Barbituric acid / 2,4,6-trioxypyrimidine, coordinated through carbonyl oxygen | 0D · PristineOrthorhombic copper barbiturate complex, space group Fdd2; distorted square pyramidal Cu coordination. The paper describes it as a MOF, but the reported structure is a hydrogen-bonded copper barbiturate coordination complex with no Cu-Cu interaction. | 426 · Abstract |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| Crushed CuB powderresearch_0729__mat__mat_cub | Powder · Target Sample · Pristine Framework | Grown copper barbiturate crystal evenly crushed into powder for powder X-ray diffraction. | 430 · 3.5 Powder X-Ray Diffraction · Figure 6 |
| Grown emerald coloured CuB single crystalresearch_0729__mat__mat_cub | Single Crystal · Target Sample · Pristine Framework | Single crystal grown in silica gel by conventional gel technique at room temperature; optimum pH 6.5, gel density 1.03 g/cc, 0.02 M barbituric acid, and 0.25 M copper acetate top solution. | 427 · 3.1 Crystal Growth · Figure 1 |