Yan Y., Zhang N.-N., Fuhrmann D. et al. · Dalton Transactions · 2022 · 15946-15953
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.
Although crystallographically porous, activated La-ONDI is nearly non-porous for N2 and CO2, likely because activation induces a structural transformation/contraction.
Caveat: Gas-sorption numerical values were read from the figure annotation; the qualitative non-porous conclusion is in the SI caption and main text.
3 · Framework stability · Fig. S8 · Linked to 4 structured results
La-ONDI combines high chemical stability with moderate electrical conductivity, remaining crystalline from pH 3 to pH 13 and in common organic solvents/reagents.
Caveat: Stability evidence is based on PXRD phase retention, not full retention of all physical properties.
3 and 5 · Framework stability; Conclusions · Fig. 2 · Linked to 3 structured results
Catechol is not encapsulated/incorporated in La-ONDI-Catechol; it acts as a reducing reagent that promotes NDI radical-anion formation.
Caveat: Based on nearly identical PXRD/IR and absence of catechol proton signals in dissolved sample NMR.
4 · Optical properties and radical character · Fig. S13; Fig. S14; Fig. S15 · Linked to 2 structured results
Band transport via pi-pi interactions is excluded; electron hopping between redox-active centres is proposed as the main charge transport mechanism.
Caveat: Mechanism is inferred from structural separation, redox activity and temperature dependence rather than direct carrier-mobility measurement.
5 · Electrical conductivity · Fig. S18; Fig. S19 · Linked to 4 structured results
Significant proton transport is considered unlikely because La-ONDI lacks a continuous hydrogen-bond network.
Caveat: Negative mechanistic claim based on structural hydrogen-bond analysis rather than isotope or humidity-dependent transport.
5 · Electrical conductivity · Fig. S21
The increased electrical conductivity of La-ONDI-DMF and La-ONDI-Catechol is attributed to higher concentrations of NDI radical anions generated by more reducing synthesis environments.
Caveat: Conductivity was measured on pressed pellets and authors caution it may be underestimated by grain-boundary resistance and anisotropy.
5 · Electrical conductivity · Fig. 3; Fig. S12; Table S3 · Linked to 9 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| Dy-ONDI | not reportedDy3+ lanthanide hydroxamate framework nodes. · ONDI2- hydroxamate linker from H2ONDI. | 3D · PristineMicrocrystalline lanthanide ONDI product with PXRD pattern and Pawley unit cell similar to the La/Sm ONDI family. | 2 · Results and discussion - Synthesis and crystal structure · Fig. S1 and S23 |
| Gd-ONDI | not reportedGd3+ lanthanide hydroxamate framework nodes. · ONDI2- hydroxamate linker from H2ONDI. | 3D · PristineMicrocrystalline lanthanide ONDI product with PXRD pattern and Pawley unit cell similar to the La/Sm ONDI family. | 2 · Results and discussion - Synthesis and crystal structure · Fig. S1 and S23 |
| La-ONDI | {[La(ONDI)(H2O)2]Cl.2H2O.0.75DMA}n; SI empirical formula C17H18.75ClLaN2.75O10.75La3+ nodes in linear one-dimensional La-O chains; each La3+ is ten-fold coordinated by eight O atoms from four ONDI2- ligands and two coordinated water molecules. · ONDI2- hydroxamate linker from H2ONDI, 2,7-dihydroxybenzo[lmn][3,8]phenanthroline-1,3,6,8(2H,7H)-tetraone. | 3D · PristineCationic porous 3D hydroxamate framework, [La(ONDI)]+, crystallising in C2/c with 1D channels along the c axis; described as MIL-47/MOF-69A-like rod packing. | 1-2 · Abstract; Results and discussion - Synthesis and crystal structure · Fig. 1 |
| Sm-ONDI | SI empirical formula C17H13ClN3O8SmSm3+ hydroxamate framework nodes; reported coordination number 9. · ONDI2- hydroxamate linker from H2ONDI. | 3D · PristineLanthanide ONDI framework related to La-ONDI but not exactly isostructural; C2/c single-crystal structure in SI. | 2 · Results and discussion - Synthesis and crystal structure · Table S1; Fig. S6 |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| Dy-ONDI microcrystalline materialresearch_0288__mat__m_dy_ondi | Powder · Target Sample · Pristine Framework | Microcrystalline lanthanide ONDI product. | 2 · Results and discussion - Synthesis and crystal structure · Fig. S1 and S23 |
| Gd-ONDI microcrystalline materialresearch_0288__mat__m_gd_ondi | Powder · Target Sample · Pristine Framework | Microcrystalline lanthanide ONDI product. | 2 · Results and discussion - Synthesis and crystal structure · Fig. S1 and S23 |
| activated La-ONDIresearch_0288__mat__m_la_ondi | Powder · Target Sample · Doped | As-synthesised La-ONDI exchanged with MeOH six times in two days and evacuated for gas adsorption/activation studies. | 6 · Experimental - Gas adsorption experiments · Fig. S8 |
| La-ONDI-Catechol pressed pelletresearch_0288__mat__m_la_ondi | Pellet · Target Sample · Doped | Prepared by using catechol as reducing reagent in place of 18-crown-6; pressed pellet used for conductivity.not reported | 4-5 · Results and discussion - Optical properties and radical character; Experimental · Fig. S15 |
| La-ONDI-DMA single crystalsresearch_0288__mat__m_la_ondi | Single Crystal · Target Sample · Doped | Deep brown crystals isolated by filtration and dried in air after DMA/HCl solvothermal synthesis. | 5 · Experimental - Synthesis of La-ONDI |
| La-ONDI-DMA pressed pelletresearch_0288__mat__m_la_ondi | Pellet · Target Sample · Doped | Crystalline La-ONDI-DMA powder pressed into 13 mm pellet for two-contact DC conductivity.not reported | 6 · Experimental - Electrical conductivity measurements · Fig. 3c; Table S3 |
| La-ONDI-DMF pressed pelletresearch_0288__mat__m_la_ondi | Pellet · Target Sample · Doped | Prepared by replacing DMA with DMF and adding 18-crown-6; pressed pellet used for conductivity.not reported | 4-5 · Results and discussion - Optical properties and radical character; Experimental · Fig. 3; Table S3 |
| Sm-ONDI crystalsresearch_0288__mat__m_sm_ondi | Single Crystal · Target Sample · Pristine Framework | Brown crystals obtained together with light yellow microcrystalline by-product. | 5 · Experimental - Synthesis of Sm-ONDI · Table S1 |