Synthesis, characterization, crystal structures and magnetic properties of dissymmetrical double schiff base heterotrinuclear complexes: [CuL(H2O)CoCuL]·H2O·CH3OH and [(CuL)2Ni]·2H2O

Redetermination of the crystal structure of aqua-methanol-bis[μ2-N- (3-carboxylsalicylidene)-N′-(salicylaldehyde)-1,2-ethylenediamine- N,N′,O,O,O′,O′]dicopper(II)-magnesium(II) – methanol (1:1), [MgCu2(H2O)(CH3OH)(C17H13N2O4)2] · CH3OH

“…The bond lengths between Mg(II) ion and four phenolato oxygen atoms (2.0881 -2.1346 Å)are longer than that between Mg(II) ion and two carboxylate oxygen atoms (1.9983 -2.0699 Å). This result is similar to other heterometallic trinuclear Schiff base complexes probably because phenolato oxygen atoms are bridging [1] …”

Role of Coordinated Water and Hydrogen‐Bonding Interactions in Stabilizing Monophenoxido‐Bridged Triangular CuIIMII­CuII Compounds (M = Cu, Co, Ni, or Fe) Derived from N,N′‐Ethylenebis(3‐meth­oxysalicylaldimine): Syntheses, Structures, and Magnetic Properties

“…[10,24] The interaction between copper(II) and nickel(II) in the only structurally characterized diphenoxido-bridged Cu (16)°for 3]. Although the participation of one phenoxido bridge in the superexchange has an influence, [19] the major factor for the reduced antiferromagnetic interaction in 2 and 3 is the significant twisting of the trinuclear core.…”

Thermodynamic study of dinuclear adducts between copper(II) Salen-type complexes and organotin(IV) chlorides in acetonitrile

“…The adducts were obtained from reaction of the acceptors with donors according to equation ( figure 2; solidstate structures of the adducts were determined by X-ray reported previously [5,15]. Equilibrium constant measurements were carried out by spectrophotometric titration at 25(AE0.1) C. In a typical measurement, 2.5 mL solution of Cu(SB) (10 À5 M) in chloroform was titrated with R n SnCl 4Àn (10 À5 -10 À3 M).…”