Hammud H.H., Holman K.T., Masoud M.S. et al. · Inorganica Chimica Acta · 2009 · 3526-3540
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.
Complex 1A is assigned as a helical 1D Cu(II) coordination polymer with alternating chromophores bridged by OBt ligands.
Caveat: Conductivity for this exact crystal phase is not separately tabulated.
3536-3538 / rendered p011-p013 · 3.3.1 · Figs. 9-12 · Linked to 3 structured results
Complex 1B is assigned as a zigzag 1D Cu(II) coordination polymer bridged by OBt ligands with square-pyramidal Cu sites.
Caveat: The text says 'basic units of complex 2 form zigzag chains' in the 1B discussion; context indicates this refers to the 1B basic units, but the wording is potentially confusing.
3539 / rendered p014 · 3.3.2 · Figs. 13-15 · Linked to 3 structured results
HOBt/OBt binds multiple metal ions strongly; negative DeltaG values support thermodynamically favoured complex formation.
Caveat: Formation constants are solution thermodynamics, not direct solid-state conductivity metrics.
3539 / rendered p014 · 4. Conclusion · Tables 4-5 · Linked to 3 structured results
Magnetic moment data support octahedral high-spin Co, square-planar Ni, and antiferromagnetically coupled/polymeric Cu complexes according to the authors.
Caveat: Magnetic assignments are inferred from room-temperature effective moments and electronic spectra; not all non-crystalline complexes have solved structures.
3534 / rendered p009 · 3.2.2 · SI Table IV · Linked to 3 structured results
Low DMF solution molar conductance values indicate neutral coordination compounds/non-electrolytes.
Caveat: Solution conductance does not establish solid framework conductivity.
3533 / rendered p008 · 3.2 · Table 7 · Linked to 3 structured results
The authors state that electrons in available orbitals are not highly mobile and that chelate-ring formation hinders ligand conjugation.
Caveat: No mobility values are reported; this is an interpretive claim from conductivity activation behaviour.
3534 / rendered p009 · 3.2.4 · Linked to 2 structured results
All HOBt metal complexes examined by solid d.c. conductivity behave as semiconductors; conductivity increases with temperature, interpreted as extrinsic conduction involving activation from donor levels to the conduction band and/or thermally activated hopping.
Caveat: Table 9 reports activation fit parameters rather than raw conductivity-versus-temperature data; exact temperature ranges for each fitted segment are only visible graphically in Fig. 8.
3534-3536 / rendered p009-p011 · 3.2.4 · Fig. 8; Table 9 · Linked to 3 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| [Co(OBt)2(HOBt)2(H2O)2] . 3H2O (5) | CoC24H22N12O6 plus 3H2O in synthesis heading/Table 7 contextCo(II) · OBt and HOBt ligands | unknown · PristineIsolated cobalt HOBt complex; octahedral high-spin configuration inferred from magnetic data. | 3528-3534 / rendered p003-p009 · 2.3.6; 3.2 · Tables 7-9 |
| [Cu(gly)2] . H2O | CuC4H8N2O4Cu(II) · glycine | unknown · UnknownCopper glycine comparison complex listed in physical-property table. | 3533 / rendered p008 · Table 7 · Table 7 |
| [Cu(gly)(OBt)(H2O)] (7) | CuC8H10N4O4Cu(II) · glycine and OBt ligands | unknown · PristineMixed glycine/HOBt copper complex; no crystal structure reported here. | 3528-3533 / rendered p003-p008 · 2.3.8; Table 7 · Table 7 |
| [Cu(OBt)2(H2O)2] (2) | CuC12H12N6O4Cu(II) · OBt (deprotonated 1-hydroxybenzotriazolate) | unknown · PristinePrepared copper HOBt complex; magnetic and conductivity discussion suggests polymeric Cu...Cu interactions, but no single-crystal structure is reported for this phase. | 3528-3529 / rendered p003-p004 · 2.3.3 and Table 7 · Table 7 |
| [Cu(OBt)(H2O)2(Cl)] (3) | CuC6H8N3O3ClCu(II) · OBt ligand; chloride and water co-ligands | unknown · PristinePrepared copper HOBt chloride complex; no crystal structure reported here. | 3528-3533 / rendered p003-p008 · 2.3.4; Table 7 · Table 7 |
| [Cu2(H2O)5(OBt)2(mu-OBt)2] . 2H2O . EtOH (1A) | C26H36Cu2N12O12; [Cu2(H2O)5(OBt)2(mu-OBt)2] . 2H2O . EtOHCu(II) centres; alternating Cu1 square-pyramidal and Cu2 distorted trans-octahedral environments · terminal and bridging 1-hydroxybenzotriazolate (OBt) ligands | 1D · PristineHelical 1D coordination polymer chains with intra- and inter-chain pi-pi interactions; layers pack into a three-dimensional supramolecular structure. | 3536-3538 / rendered p011-p013 · 3.3.1 · Figs. 9-12; Table 10 |
| [Cu(mu-OBt)(HOBt)(OBt)(EtOH)] (1B) | C20H19CuN9O4; [Cu(mu-OBt)(HOBt)(OBt)(EtOH)]Cu(II) square-pyramidal centres bridged by OBt · HOBt and OBt ligands; ethanol axial ligand | 1D · PristineZigzag 1D polymeric chains of Cu(II) atoms bridged by 1-hydroxybenzotriazolate ligand; pi-pi interaction and H-bonding between chains. | 3539 / rendered p014 · 3.3.2 · Figs. 13-15 |
| 1-hydroxybenzotriazole (HOBt) | C6H5N3Onone · HOBt ligand / precursor | 0D · UnknownMolecular ligand used for acidity, complex-formation and control electrical-conductivity measurements. | 3527 / rendered p002 · 2. Experimental · Fig. 1 |
| [Ni(OBt)(Cl)(H2O)2] (4) | NiC6H8N3O3ClNi(II) · OBt ligand; chloride and water co-ligands | unknown · PristineNickel HOBt complex; square-planar geometry inferred from zero effective magnetic moment. | 3528-3534 / rendered p003-p009 · 2.3.5; 3.2 · Tables 7-9 |
| [Zn(OBt)(HOBt)(Cl)(H2O)] (6) | ZnC12H11N6O3ClZn(II) · OBt and HOBt ligands; chloride and water co-ligands | unknown · PristinePrepared zinc HOBt complex; no crystal structure reported here. | 3528-3533 / rendered p003-p008 · 2.3.7; Table 7 · Table 7 |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| HOBt solid controlresearch_0243__mat__hobt_ligand | Powder · Paper Level Unspecified · Unknown | free ligand used as solid tablet/pellet for Table 9 transport and as solution ligand for pKa/formation measurementsnone · 0.12 mm tablet thickness for solid electrical-conductivity samples; otherwise not applicable/not stated | 3528 and 3536 / rendered p003,p011 · 2.2; Table 9 · Table 9 |
| 1A black-brown single crystalsresearch_0243__mat__cu_polymer_1a | Single Crystal · Target Sample · Pristine Framework | large black brown crystals from slow evaporation of filtratenone · not applicable/not stated | 3528 / rendered p003 · 2.3.1 |
| 1B light olive green needlesresearch_0243__mat__cu_polymer_1b | Single Crystal · Target Sample · Pristine Framework | light olive green needles from slow evaporationnone · not applicable/not stated | 3528 / rendered p003 · 2.3.2 |
| [Co(OBt)2(HOBt)2(H2O)2] pressed tabletresearch_0243__mat__co_hobt_complex | Pellet · Target Sample · Pristine Framework | pale pink solid pressed into tablet for solid electrical-conductivity measurementnone · 0.12 mm tablet thickness for solid electrical-conductivity samples; otherwise not applicable/not stated | 3528 and 3536 / rendered p003,p011 · 2.2; Table 9 · Table 9 |
| [Cu(gly)2] . H2O blue controlresearch_0243__mat__cu_gly2_h2o_control | Powder · Pristine Control · Unknown | comparison copper glycine sample listed in Table 7none · not applicable/not stated | 3533 / rendered p008 · Table 7 · Table 7 |
| [Cu(gly)(OBt)(H2O)] sea-green solidresearch_0243__mat__cu_gly_obt_h2o | Powder · Target Sample · Pristine Framework | sea-green solid isolated for physical-property measurementsnone · not applicable/not stated | 3528 and 3533 / rendered p003,p008 · 2.3.8; Table 7 · Table 7 |
| [Cu(OBt)2(H2O)2] pressed tabletresearch_0243__mat__cu_obt2_h2o2 | Pellet · Target Sample · Pristine Framework | green solid pressed into tablet for solid electrical-conductivity measurementnone · 0.12 mm tablet thickness for solid electrical-conductivity samples; otherwise not applicable/not stated | 3528 and 3536 / rendered p003,p011 · 2.2; Table 9 · Table 9 |
| [Cu(OBt)(H2O)2(Cl)] brown solidresearch_0243__mat__cu_obt_cl_h2o2 | Powder · Target Sample · Pristine Framework | brown solid isolated for physical-property measurementsnone · not applicable/not stated | 3528 and 3533 / rendered p003,p008 · 2.3.4; Table 7 · Table 7 |
| [Ni(OBt)(Cl)(H2O)2] pressed tabletresearch_0243__mat__ni_obt_cl_h2o2 | Pellet · Target Sample · Pristine Framework | light green solid pressed into tablet for solid electrical-conductivity measurementnone · 0.12 mm tablet thickness for solid electrical-conductivity samples; otherwise not applicable/not stated | 3528 and 3536 / rendered p003,p011 · 2.2; Table 9 · Table 9 |
| [Zn(OBt)(HOBt)(Cl)(H2O)] white solidresearch_0243__mat__zn_hobt_complex | Powder · Target Sample · Pristine Framework | white solid isolated for physical-property measurementsnone · not applicable/not stated | 3528 and 3533 / rendered p003,p008 · 2.3.7; Table 7 · Table 7 |
| HOBt metal-ion potentiometric solution seriesresearch_0243__mat__hobt_ligand | Unknown · Paper Level Unspecified · Model | aqueous-organic titration solutions containing HOBt with Co, Cu, Ni, Fe, Cd, Zn, Pb or Hg ionsnone · not applicable/not stated | 3527 and 3531 / rendered p002,p006 · 2.1.3; 3.1.4 · Fig. 4; Tables 4-5 |