Synthesis and magnetostructural characterization of two ferromagnetic nickel(II) dimers

Dinuclear Iron(III) and Nickel(II) Complexes Containing N‐(2‐Pyridylmethyl)‐N′‐(2‐hydroxyethyl)ethylenediamine: Catalytic Oxidation and Magnetic Properties

“…With the best fit possible, J (= J ab )=+33.0 cm −1 , g= 2.19, and spin impurities, ρ =0.005. The coupling constant J ab through the bridging nitrogen atoms was expected to be ferromagnetic, which is consistent with the value reported for [Ni 2 ( μ ‐N 3 ) 2 (232‐N 4 ) 2 ](ClO 4 ) 2 (Ni⋅⋅⋅Ni 3.423 Å, Ni−N 2.167 Å, Ni‐N‐Ni, 103.8°, J =+33.8 cm −1 ); this value is greater than those of [{Ni(terpy)(N 3 ) 2 } 2 ]⋅H 2 O (Ni‐N‐Ni: 101.6° and J =+22.8 cm −1 ) and [Ni 2 (terpy) 2 (N 3 ) 3 (H 2 O)]ClO 4 ⋅H 2 O (Ni‐N‐Ni: 102.5° and J =+13.6 cm −1 ) (terpy=2,2′:6′,2′′‐terpyridine) . In 2 , the bridging angle of Ni1‐N4‐Ni1(− x +1, − y +1, − z +1) was 98.78(14)°.…”

“…This result can be expected as ferromagnetic coupling is attributed to the end‐on bridging mode of azide ion, attributed to spin polarization . Complex 2 exhibited more efficient exchange pathways as compared with those of other nickel(II) dinuclear complexes . Hence, 2 exhibits a comparatively strong ferromagnetic coupling.…”

Synthesis and crystal structure of two dimeric cadmium(II) complexes bonded with pseudohalides, 1.1 and 1.3 bonding

“…In this study, the combination of complexes coordinated by the tridentate dmpp ligand with a pseudohalide ion has been conceived. Many dinuclear complexes of similar structure can be found in literature [16][17][18]. In this study two different m-bridges were seen to form using Cd(II) ions and two different pseudohalide ions.…”

Two new oxamido-bridged trinuclear complexes [Cu2M] (M = Mn(II), Co(II)): synthesis, structures, and magnetic properties

“…The area of molecular magnetism has stimulated for many years great efforts from the synthetic arena of coordination chemistry with the goal of preparing materials with the desired magnetic properties [1][2][3][4][5][6][7][8][9]. In this respect, the judicious choice of achieving a ferromagnetic interaction between the nearest neighbor ions of a polymetallic system [10,11] has been a successful approach.…”