Abstract
The synthesis of a novel redox-active bipyridinium dimer ligand, 1,4-bis(4′-pyridyl-1′-pyridinio)phthalazine (Bpyph) dichloride and its magnetic coordination assemblies [(Bpyph)CuIIFeII(C2O4)3]·6.5H2O (1) and [(Bpyph)CoII2(C2O4)3]·5.5H2O (2) are described. X-Ray single-crystal diffraction studies confirm that compound 1 is built from [CuFe(C2O4)3]2− units bridged sequentially by Bpyph cations to form polymeric chains with Δ and Λ enantiomers in [Fe(C2O4)3]4−. Compound 2 consists of honeycomb layers of the cobalt oxalate complex [Co2(C2O4)3]2− interleaved by Bpyph cations. The magnetic susceptibility data show antiferromagnetic interaction in both compounds with Weiss constants −2.38 K for 1 and −38 K for 2.
Original language | English |
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Pages (from-to) | 3634-3638 |
Number of pages | 5 |
Journal | Journal of the Chemical Society. Dalton Transactions |
Volume | 3 |
Issue number | 18 |
DOIs | |
Publication status | Published - 3 Sept 2003 |
Externally published | Yes |
Keywords
- Cobalt
- Copper
- Heterocycles
- Iron
- Magnetic properties