Polyoxometalates· 2026Q1
A Co II/III oxo-carboxylate cluster featuring a Lindqvist core
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- Q1SCImago
- 2026year
Short summary
A novel nonanuclear mixed-valent cobalt cluster, [CoIII3CoII6(µ6-O)(piv)7(thmp)4(MeCN)2(H2O)]·4(MeCN), was synthesized and characterized, featuring an unusual {Co6O19} Lindqvist-type core capped by three Co sites.
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Key points
- A nonanuclear mixed-valent cobalt cluster, [CoIII3CoII6(µ6-O)(piv)7(thmp)4(MeCN)2(H2O)]·4(MeCN), was synthesized.
- The cluster contains an unusual {Co6O19} Lindqvist-type core capped by three Co sites.
- The core structure remains intact in solution, as confirmed by ESI-mass spectrometry.
- Magnetic studies show weak intra-cluster antiferromagnetic exchange coupling among six high-spin Co(II) ions.
AI-generated from the title and abstract; the full text is not read.
Abstract
Abstract A nonanuclear mixed-valent coordination cluster, isolated as [CoIII3CoII6(µ6-O)(piv)7(thmp)4(MeCN)2(H2O)]·4(MeCN) (1), forms in a one-pot reaction of cobalt(II) pivalate and 1,1,1-tris(hydroxymethyl)propane (H3thmp) in acetonitrile solution. Single-crystal X-ray diffraction analysis reveals an unusual {Co6O19} Lindqvist-type core capped by three Co sites. High-resolution ESI-mass spectrometry studies confirm the integrity of this core structure in solution, exhibiting a series of peaks corresponding to the intact cluster species. Magnetic studies indicate that the magnetic behavior in 1 is dominated by six high-spin Co(II) ions in octahedral ligand fields exhibiting weak intra-cluster antiferromagnetic exchange coupling.
The authors' abstract, as published at the source. Polyoxometalates, 2026 · DOI ↗
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Field: Electronic, Optical and Magnetic Materials
Electronic, Optical and Magnetic MaterialsMaterials Science