Exploring the Potential of Oxalyldihydrazide-Derived Schiff Bases as Versatile Ligands: Synthesis, Structural Characterization, and Magnetic Properties
Schiff bases constitute a broad and well-established class of ligands widely utilized in coordination chemistry. To further enrich this family and assess the potential impact of oxalyldihydrazide-derived Schiff bases in the realms of coordination chemistry and molecular magnetism, three novel ligand...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-01-01
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| Series: | Magnetochemistry |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2312-7481/11/1/4 |
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| Summary: | Schiff bases constitute a broad and well-established class of ligands widely utilized in coordination chemistry. To further enrich this family and assess the potential impact of oxalyldihydrazide-derived Schiff bases in the realms of coordination chemistry and molecular magnetism, three novel ligands have been synthesized and investigated. i.e., N′1,N′2-bis((<i>E</i>)-pyridin-2-ylmethylene)oxalohydrazide (<b>H<sub>2</sub>L1</b>), N′1-((<i>E</i>)-(3-methylpyridin-2-yl)methylene)-N′2-((<i>E</i>)-(6-methylpyridin-2-yl)methylene)oxalohydrazide (<b>H<sub>2</sub>L2</b>) and N′1,N′2-bis((E)-phenyl(pyridin-2-yl)methylene)oxalohydrazide (<b>H<sub>2</sub>L3</b>) were synthesized and then combined with various 3<i>d</i> metals, resulting in the formation of five new complexes with formula [Cu<sub>5</sub>(L1)<sub>2</sub>(H<sub>2</sub>O)<sub>8</sub>(MeOH)<sub>2</sub>(NO<sub>3</sub>)<sub>2</sub>](NO<sub>3</sub>)<sub>4</sub> (<b>1</b>), [Mn<sub>2</sub>(HL2)<sub>2</sub>(BzO)<sub>2</sub>(MeOH)<sub>2</sub>]·2MeOH (<b>2</b>), [Ni(HL2)<sub>2</sub>]·2MeOH (<b>3</b>), [Ni<sub>4</sub>(L2)<sub>4</sub>]·4MeOH (<b>4</b>), [Ni<sub>8</sub>(L3)<sub>4</sub>(AcO)<sub>4</sub>(H<sub>2</sub>O)<sub>12</sub>](OAc)<sub>4</sub> (<b>5</b>). These compounds were structurally and magnetically characterized, revealing the various coordination modes exhibited by the ligands and a distinct antiferromagnetic behavior. Alternating current (AC) susceptibility measurements were conducted on complex <b>1</b>, showing no evidence of Single Molecule Magnet (SMM) behavior. |
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| ISSN: | 2312-7481 |