| Autor: |
Lestella D. Bell, Robert L. LaDuca, Ciana M. Rogers, Erika J. Glatz |
| Rok vydání: |
2015 |
| Předmět: |
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| Zdroj: |
Zeitschrift für anorganische und allgemeine Chemie. 641:1357-1365 |
| ISSN: |
0044-2313 |
| DOI: |
10.1002/zaac.201500127 |
| Popis: |
Hydrothermal reactions of nickel or cobalt nitrate with the dipyridylamide ligand bis(4-pyridylformyl)piperazine (4-bpfp) and either 5-methoxyisophthalate (H2omeip) or 5-methylisophthalate (H2mip) afforded a series of coordination polymers that were structurally characterized by single-crystal X-ray diffraction. Different synthetic conditions afforded the 1D chain phase {[Ni(Homeip)2(H2omeip)(bpfp)]·2H2O}n (1) or the mutually inclined interpenetrated (4, 4) grid system in {[Ni(omeip)(bpfp)(H2O)]·2H2O}n (2). The analogous cobalt phase {[Co(omeip)(bpfp)]·3H2O}n (3) lacks bound water molecules, which enforces a non-interpenetrated (4, 4) grid structure based on {Co2(OCO)2} dinuclear clusters. Similar clusters are seen in {[Co(mip)(bpfp)(H2O)2]·3.5H2O}n (4), which manifests a 1D ribbon structural motif. Its nickel congener {[Ni(Hmip)2(bpfp)(H2O)2]·2H2mip}n (5) also shows a 1D chain motif. A variable temperature magnetic susceptibility study indicates antiferromagnetic coupling within the dimeric units in 3 and 4 concomitant with single ion effects. Additionally, thermal degradation properties of these new materials are described. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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