The chemistry of dinitrato-2, 2′-bipyridinecopper(II): preparation and characterization of binuclear complexes having a Cu(μ-OH)2Cu and Cu(μ-N3)2Cu core

A copper complex of an unusual hydroxy–carboxylate ligand: [Cu(bpy)(C4H4O6)]

“…Copper complexes have drawn recent attention owing to applications in redox reactions (Zubair et al, 2019;Maity et al, 2010;Wang et al, 2006) and oxygen transport (Sheykhi et al, 2018;Liu et al, 2016;Tadsanaprasittipol et al, 1998;Kato et al, 2016). The 2,2 0 -bipyridine ligand has been used in a variety of supramolecular architectures (Fei et al, 2013;John et al, 2004;Seco et al, 2000;Barquín et al, 2010;Yuan et al, 2008).…”

[Au(CN)4]- as Both an Intramolecular and Intermolecular Bidentate Ligand with [(tmeda)Cu(μ-OH)] Dimers: from Antiferro- to Ferromagnetic Coupling in Polymorphs

“…Anion coordination of this type has only been previously observed with oxygen donor anions in hydroxo-bridged Cu-(II) dimer complexes. 28,[69][70][71][72][73] The Cu(1)-N(11) distance of 2.394(7) Å completes the square-pyramidal coordination sphere of the Cu(II) atom. This coordination results in the formation of a 1-D chain (Figure 2).…”

Copper(II) azide complexes of [Cu(acac)(N3)(dpyam)] and [Cu(μ-N3-κN1)(C2N3-κN1)(dpyam)]2: Synthesis, crystal structure and magnetism

“…To the best of our knowledge, only the magnetic properties in [Cu 2 (DMP) 2 (N 3 ) 4 ], with a s = 0.64, has been measured and this compound exhibits an antiferromagnetic interaction with a J value of À27.6 cm À1 [20]. Although much effort has recently been focused on the studies of Cu(II) compounds with the azido anionic ligand, including bidentate chelate such as 2,2 0 -bipyridine [21,22] and 1,10-phenanthroline [13], very few azido compounds with dpyam as the co-ligand have been reported [23,24]. In order to study further how the nature of the co-ligand affected the structures and properties of azide compounds, we report herein the syntheses [25], crystal structures [26], electronic and magnetic properties of two new compounds, the mononuclear compound [Cu(acac)(N 3 )(dpyam)] (1) and the dinuclear compound [Cu(l-N 3 -j N1 )(C 2 N 3 -j N1 )(dpyam)] 2 (2) (in which acac = acetylacetonate; dpyam = di-2-pyridylamine).…”