A chiral copper(II) inverse-9-metallacrown-3 complex: Synthesis, crystal structure, ferroelectric and magnetic properties

Trichloridotris{N-[phenyl(pyridin-2-yl)methylidene]hydroxylamine-κ2N,N′}samarium(III)

“…For related literature on the phenyl-2-pyridyl ketone oxime ligand chelating one metal centre, see: Yin & Liu (2009); Yan & Liu (2009); Xiang et al (2006); Milios et al (2004). For the phenyl-2-pyridyl ketone oxime ligand bridging two metals, see: Liu et al. (2011); Holynska & Dehnen (2011); Papatriantafyllopoulou et al (2007).…”

“…Phenyl-2-pyridyl ketone oxime is a ligand used in the synthesis of metal-organic complexes. It usually binds to metals in a bidentate fashion, either chelating one metal centre (Yin & Liu, 2009;Yan & Liu, 2009;Xiang et al, 2006;Milios et al, 2004) or bridging two metals (Liu et al, 2011;Holynska & Dehnen, 2011;Papatriantafyllopoulou et al, 2007). Its complexes find applications in diverse areas such as functional supramolecular design, magnetic materials and catalysis (Korpi et al, 2005;Stamatatos et al, 2006).…”

Four new trinuclear {Cu3(μ3-OH)(oximate)3}2+ clusters: crystal structure and magnetic behaviour

“…The reaction of oximate ligands with paramagnetic 3d metal ions can generate polynuclear complexes with interesting magnetic properties, including single-molecule magnet behaviour.1-7 Among the polynuclear oximate compounds, a great number of isolated triangles with the {Cu3(μ3-OR)(oximate)3}n+ core have been well characterized. [8][9][10][11][12][13][14][15][16][17][18][19][20][21] The magnetic response of these small molecules can be useful for determining the factors that influence the magnetic coupling and for studying the spin frustration phenomenon by testing the magnetic exchange models.22 The {Cu3(μ3-OR)(oximate)3}n+ core can be found also in discrete hexanuclear copper(II) cages with the [Cu3O⋯H⋯OCu3] motif. [23][24][25][26][27][28] On the other hand, the phosphonate ligands can also generate polynuclear complexes with interesting magnetic properties, including single-molecule magnet behaviour.29 A possibility to explore can be to combine in the same synthesis oximate and phosphonate ligands with copper(II) salts to try to obtain new polynuclear Cu(II) complexes with new topologies.…”

“…[1][2][3][4][5][6][7] Among the polynuclear oximate compounds, a great number of isolated triangles with the {Cu 3 (μ 3 -OR)(oximate) 3 } n+ core have been well characterized. [8][9][10][11][12][13][14][15][16][17][18][19][20][21] The magnetic response of these small molecules can be useful for determining the factors that influence the magnetic coupling and for studying the spin frustration phenomenon by testing the magnetic exchange models. 22 The {Cu 3 (μ 3 -OR)(oximate) 3 } n+ core can be found also in discrete hexanuclear copper(II) cages with the [Cu 3 O⋯H⋯OCu 3 ] motif.…”