Hassan M.K., Abd-Alla M.A., Hasan R.M. · Journal of Macromolecular Science: Part A - Chemistry · 1990 · 1501-1512
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.
All reported polychelates are amorphous by X-ray analysis with halo patterns over 2theta = 5-35 deg.
Caveat: This limits use as evidence for crystalline conductive MOFs; the paper reports coordination polymers/polychelates, not porous MOF structures.
1504 · Results and Discussion · text · Linked to 6 structured results
Mossbauer data assign the Fe-BHPAP polychelate to high-spin Fe(III), with broad lines attributed to two slightly different iron environments.
Caveat: Only the Fe polychelate was measured by Mossbauer spectroscopy.
1511 · Results and Discussion · Fig. 4 · Linked to 3 structured results
The polychelates have 1:1 metal:ligand stoichiometry; coordinated water is assigned for all except the Cu(II) complex.
Caveat: Based on elemental analysis and IR/TGA assignments; no crystal structure is reported.
1504,1508 · Results and Discussion · Tables 1-2 · Linked to 8 structured results
TGA indicates two-stage decomposition and a thermal stability order of Ni > Cu > Mn, Cr > Ti > Fe.
Caveat: The stability order is stated by the authors from Table 3; exact onset temperatures are not fully tabulated.
1511 · Results and Discussion · Table 3 · Linked to 6 structured results
The synthesized polychelates are insulating except the Ni(II)-BHPAP complex, which is described as semiconducting.
Caveat: Individual non-Ni conductivities are not separated; the Ni Arrhenius plot was not digitised for best-value extraction.
1501,1511 · Abstract; Results · Fig. 3 · Linked to 6 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| 1,4-bis(2'-hydroxyphenylazomethine) phenylene (BHPAP) | C20H16N2O2none · Schiff-base ligand from o-aminophenol and terephthaldehyde | 0D · UnknownOrganic bidentate Schiff-base ligand used to prepare the coordination polymers. | 1502 · Experimental · Synthesis of BHPAP |
| Cr(III)-BHPAP polychelate | [CrClC20H14N2O2.H2O]nCr(III) · BHPAP / deprotonated 1,4-bis(2'-hydroxyphenylazomethine) phenylene | 1D · PristineProposed polymeric chelate repeat with Cr(III), chloride, and water; amorphous halo XRD pattern. | 1504-1506 · Results and Discussion · Table 1 |
| Cu(II)-BHPAP polychelate | [CuC20H14N2O2]nCu(II) · BHPAP / deprotonated 1,4-bis(2'-hydroxyphenylazomethine) phenylene | 1D · PristinePolymeric Cu(II) chelate repeat without coordinated water in the empirical formula; amorphous halo XRD pattern. | 1504-1506 · Results and Discussion · Table 1 |
| Fe(III)-BHPAP polychelate | [FeClC20H14N2O2.H2O]nFe(III) · BHPAP / deprotonated 1,4-bis(2'-hydroxyphenylazomethine) phenylene | 1D · PristineProposed polymeric chelate repeat with Fe(III), chloride, and water; amorphous halo XRD pattern. | 1504-1506 · Results and Discussion · Table 1 |
| Mn(II)-BHPAP polychelate | [MnC20H14N2O2.2H2O]nMn(II) · BHPAP / deprotonated 1,4-bis(2'-hydroxyphenylazomethine) phenylene | 1D · PristineProposed polymeric chelate repeat with Mn(II) and two waters; amorphous halo XRD pattern. | 1504-1506 · Results and Discussion · Table 1 |
| Ni(II)-BHPAP polychelate | [NiC20H14N2O2.2H2O]nNi(II) · BHPAP / deprotonated 1,4-bis(2'-hydroxyphenylazomethine) phenylene | 1D · PristineProposed polymeric chelate repeat with Ni(II) and two waters; amorphous halo XRD pattern. | 1504-1506 · Results and Discussion · Table 1 |
| Ti(III)-BHPAP polychelate | [TiClC20H14N2O2.H2O]nTi(III) · BHPAP / deprotonated 1,4-bis(2'-hydroxyphenylazomethine) phenylene | 1D · PristineProposed polymeric chelate repeat with Ti(III), chloride, and water; amorphous halo XRD pattern. | 1504-1506 · Results and Discussion · Table 1 |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| BHPAP ligand crystalsresearch_0627__mat__mat_bhpap_ligand | Powder · Paper Level Unspecified · Unknown | Filtered, washed with ethanol, dried, and recrystallized from ethanol. | 1502 · Experimental · Synthesis of BHPAP |
| Cr-BHPAP polychelate powderresearch_0627__mat__mat_cr_bhpap | Powder · Target Sample · Pristine Framework | Filtered product; washed with ethyl alcohol; dried under vacuum over phosphorus pentoxide. Pressed pellets used for electrical tests. | 1503-1506 · Experimental; Results and Discussion · Table 1 |
| Cu-BHPAP polychelate powderresearch_0627__mat__mat_cu_bhpap | Powder · Target Sample · Pristine Framework | Filtered product; washed with ethyl alcohol; dried under vacuum over phosphorus pentoxide. Pressed pellets used for electrical tests. | 1503-1506 · Experimental; Results and Discussion · Table 1 |
| Fe-BHPAP polychelate powderresearch_0627__mat__mat_fe_bhpap | Powder · Target Sample · Pristine Framework | Filtered product; washed with ethyl alcohol; dried under vacuum over phosphorus pentoxide. Pressed pellets used for electrical tests. | 1503-1506 · Experimental; Results and Discussion · Table 1 |
| Mn-BHPAP polychelate powderresearch_0627__mat__mat_mn_bhpap | Powder · Target Sample · Pristine Framework | Filtered product; washed with ethyl alcohol; dried under vacuum over phosphorus pentoxide. Pressed pellets used for electrical tests. | 1503-1506 · Experimental; Results and Discussion · Table 1 |
| Ni-BHPAP polychelate powderresearch_0627__mat__mat_ni_bhpap | Powder · Target Sample · Pristine Framework | Filtered product; washed with ethyl alcohol; dried under vacuum over phosphorus pentoxide. Pressed pellets used for electrical tests. | 1503-1506 · Experimental; Results and Discussion · Table 1 |
| Ti-BHPAP polychelate powderresearch_0627__mat__mat_ti_bhpap | Powder · Target Sample · Pristine Framework | Filtered product; washed with ethyl alcohol; dried under vacuum over phosphorus pentoxide. Pressed pellets used for electrical tests. | 1503-1506 · Experimental; Results and Discussion · Table 1 |