Magnetic Study of a Pentanuclear {Co 2 III Co 3 II } Cluster with a Bent {Co II 3 } Motif
We have synthesised and structurally characterised a new pentanuclear mixed-valent cobalt cluster of formula [CoII3CoIII2(OH)2(piv)6(L)2(H2O)4] (piv = trimethylacetate, H2L = salicylideneanthranillic acid) from reaction of a dinuclear cobalt pivalate precursor with a Schiff base type ligand under mild reaction conditions. The core structure can be conveniently described as two fused Co3–μ3–OH triangles with a strict unique sharing vertex point. A complete picture of the magnetic behaviour of this compound is presented. Through combined use of susceptibility, magnetisation, and EPR data as well as broken-symmetry DFT calculations, we have supported the magnetic data that show weak and anisot…
Switching nuclearity and Co(II) content through stoichiometry adjustment: {Co(II)6Co(III)3} and {Co(II)Co4(III)} mixed valent complexes and a study of their magnetic properties.
We are reporting two new mixed valent Co(ii)/Co(iii) polynuclear complexes, {Co II 6 Co III 3 } and {Co II Co III 4 }, bearing different amount of Co(ii) ions in their cores, through the employment of the multidentate triethanolamine (teaH 3 ) ligand in different stoichiometric ratios. We present a complete picture of the magnetic behaviour of both complexes through a combined usage of the susceptibility, magnetization and X-band EPR data as well as broken-symmetry DFT calculations. Compound 1 shows an atypical spin-only behaviour, probably due to the presence of four and five coordinated Co(ii) sites as well as highly distorted six coordinated Co(ii) ions, promoting a high degree of orbita…
CCDC 1026942: Experimental Crystal Structure Determination
Related Article: Alejandro V. Funes, Luca Carrella, Lorenzo Sorace, Eva Rentschler, Pablo Alborés|2015|Dalton Trans.|44|2390|doi:10.1039/C4DT03034F
CCDC 1026941: Experimental Crystal Structure Determination
Related Article: Alejandro V. Funes, Luca Carrella, Lorenzo Sorace, Eva Rentschler, Pablo Alborés|2015|Dalton Trans.|44|2390|doi:10.1039/C4DT03034F
CCDC 977362: Experimental Crystal Structure Determination
Related Article: Irene C. Lazzarini, Alejandro V. Funes, Luca Carrella, Lorenzo Sorace, Eva Rentschler, Pablo Alborés|2014|Eur.J.Inorg.Chem.||2561|doi:10.1002/ejic.201402089