Iron and manganese alkoxide cubes

Tetra‐ and Decanuclear Iron(II) Complexes of Thiacalixarene Macrocycles: Synthesis, Structure, Mössbauer Spectroscopy and Magnetic Properties

“…They are among the very few iron(ii) polynuclear complexes of high nuclearities. Indeed, there are less than ten Fe II 4 clusters [51,[64][65][66][67][68] and, to the best of our knowledge, compound 2 is the first iron(ii) decanuclear complex. It should be noted that compound 1 is particularly stable as it appears to be insensitive to oxidation by air.…”

Synthesis, Spectroscopy, and Magnetic Properties of FeII and CoII Quinoline‐2‐carboxylates − Crystal Structure of trans‐Bis(quinoline‐2‐carboxylato)bis(propanol)iron(II)

“…[24] The FeϪO(3) bond length is 2.170(3) Å . This distance is slightly shorter than the Fe II ϪO(H)Me bond in iron() alkoxide cubes [2.24(2) and 2.208(2) Å ] [25] and in [Fe(Pic) 2 (MeOH) 2 ] [2.208(1) Å ]. [22] The quinoline rings are coplanar with the equatorial chelate rings.…”

Large Clusters of Metal Ions: The Transition from Molecular to Bulk Magnets

“…the spectra of several polyiron 0x0 and thio clusters (1 6, 35,36) in the temperature range of 4 to 300 K and, in some cases, found a sextet spectrum in the absence of a n applied field. From comparison of the Mossbauer spectra recorded with and without a n external magnetic field, she concluded that some of them behave as superparamagnets and that, because the clusters showing this behavior have a pseudo threedimensional structure, it must be expected that bulk behavior shows up at a n earlier stage in pseudo three-dimensional than it does in pseudo one-and two-dimensional particles.…”