Starodubtseva A.A., Kan T.V., Marshenya S.N. et al. · Polyhedron · 2024 · 116750
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.
Because Zn2EDTA is highly soluble in aqueous electrolytes and intercalation/deintercalation is impossible, the authors judge its prospects as an anode for water-based metal-ion batteries to be vague.
p006 / journal page 6 · Results and discussions · Linked to 1 structured result
Zn2EDTA decomposes rather than melts, with decomposition initiating near 440 degC and completing near 630 degC to residual ZnO.
Caveat: Atmosphere is inconsistently described as oxygen-argon in text and O2 flow in the figure caption.
p004-p005 / journal pages 4-5 · Results and discussions · Fig. 4 · Linked to 3 structured results
The target compound is an anhydrous monoclinic C2/c Zn2EDTA framework with no solvent-water inclusion in the refined structure.
Caveat: Main-text prose gives an inconsistent SCXRD wavelength, but Table 1, checkCIF and CIF agree on 0.71073 A.
text CIF · data_zn2edta · _space_group_name_H-M_alt; _chemical_formula_sum · Linked to 5 structured results
EDTA-linked Zn-oxygen/nitrogen chains create a 3D channel network that the authors describe as suitable for interstitial ionic mobility.
Caveat: No gas sorption, ion diffusion coefficient or direct intercalation result is reported.
p004 / journal page 4 · Results and discussions · Fig. 2 · Linked to 2 structured results
Pure anhydrous Zn2EDTA forms only in a narrow synthesis window at Zn:EDTA 2:1 and pH 2.7; small pH deviations produce hydrated or mixed phases.
Caveat: The pure-phase window is narrow; no raw phase-screen data table is supplied beyond text/Fig. 1.
p003 and p006 / journal pages 3 and 6 · Results and discussions; Conclusion · Fig. 1 · Linked to 3 structured results
The observed electrochemical activity in alkaline and neutral aqueous electrolytes is attributed to oxidation/reduction and stripping/deposition of zinc from solution, not reversible cation intercalation into Zn2EDTA.
Caveat: Mechanistic support partly relies on additional studies from the authors' previous paper, not supplied as a local document here.
p006-p007 / journal pages 6-7 · Results and discussions; Conclusion · Fig. 5 · Linked to 2 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| anhydrous Zn2EDTA metal-organic framework | Zn2(EDTA); CIF/formula unit C5H6NO4Zn (Z = 8)Zn(II) centres in distorted ZnO6 and ZnN2O4 octahedra · ethylenediaminetetraacetate (EDTA) | 3D · PristineMonoclinic C2/c anhydrous Zn-EDTA MOF; alternating zigzag chains connected by EDTA into a three-dimensional channel network. | p003-p004 / journal pages 3-4 · Results and discussions · Table 1; Fig. 2 |
| hydrated Zn2EDTA(H2O) metal-organic framework | Zn2(EDTA)(H2O)Zn(II) positions described as octahedral ZnO4N2 and tetrahedral ZnO4 environments in the literature compound · ethylenediaminetetraacetate (EDTA) | 3D · PristineKnown water-containing Zn-EDTA MOF used as a hydrated comparison in phase formation and CV plots. | p002 / journal page 2 · Introduction · Fig. 1; Fig. 5 |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| pH-dependent Zn-EDTA hydrothermal powder seriesresearch_0655__mat__mat_zn2edta | Powder · Paper Level Unspecified · Unknown | Powder samples synthesised at pH 2.5-3.4 while keeping Zn:EDTA ratio, volume, concentration, solvent and temperature constant. | p003 / journal page 3 · Results and discussions · Fig. 1 |
| Zn2EDTA composite electrode on graphite foilresearch_0655__mat__mat_zn2edta | Electrode · Target Sample · Composite | Slurry of Zn2EDTA, TIMCAL SUPER C45 and PVDF in N-methylpyrrolidone, dried at 70 degC for 1 h and vacuum dried at 120 degC for 24 h.graphite foil · doctor blade gap 100 micrometre | p003 / journal page 3 · Experimental |
| Zn2EDTA(H2O) comparison electroderesearch_0655__mat__mat_zn2edta_h2o | Electrode · Pristine Control · Composite | Hydrated Zn2EDTA(H2O)-based electrode shown as comparison in cyclic voltammograms; full preparation details are not given in the supplied main text.not specified in the comparison passage | p006 / journal page 6 · Results and discussions · Fig. 5 |
| pure anhydrous Zn2EDTA powder synthesised at pH 2.7research_0655__mat__mat_zn2edta | Powder · Target Sample · Pristine Framework | Hydrothermal product obtained at Zn:EDTA 2:1 and pH 2.7, washed with water and dried at 120 degC for 4 h. | p003 / journal page 3 · Results and discussions · Fig. 1 |
| single crystal of Zn2EDTA picked from powder sampleresearch_0655__mat__mat_zn2edta | Single Crystal · Target Sample · Pristine Framework | Single crystal selected from powder samples for SCXRD at 110.15 K. | p003 / journal page 3 · Results and discussions · Table 1 |