Synthesis and characterization of a new molecular magnet, [Ni(ampy)2]3[Fe(CN)6]2·6H2O, and synthesis, crystal structure and magnetic properties of its mononuclear precursor, trans-[Ni(ampy)2(NO3)2] (ampy=2-aminomethylpyridine)

Nickel(II)⋯π interaction in [M(ampy)2Ni(μ-CN)2(CN)2]n (M=Zn(II) and Cd(II), ampy=2-aminomethylpyridine): Syntheses, vibrational spectroscopy, thermal analyses and crystal structures of cyano-bridged heteronuclear polymeric complexes

“…In previous studies, several 2-aminomethylpyridine complexes have been reported [8][9][10][11][12][13][14][15][16][17]; however to our knowledge, no tetracyanonickelate(II) complex with a 2-aminomethylpyridine ligand as blocking ligand has been reported. Zinc(II) and cadmium(II) ions, as the cationic central atom in cyano complexes, generally adopt a coordination number of six.…”

“…The experimental study on complexes have revealed the great importance of the non-covalent Ni(II)Á Á Áp binding force between the Ni(II) ion and the pyridine ring of 2-aminomethylpyridine ligand. Although cyano-bridged complexes have been studied extensively, both structurally and spectroscopically for many years [11,16], these type complexes containing NiÁ Á Áp interaction have not been reported. The nickel(II)Á Á Áp interaction are probably weak, however, they are very import in stabilizing the polymeric structure of the complexes.…”

High-yielding synthesis of deepened cavitands bearing picolyl moieties on the upper rim

“…A wide application of pam as ligand in transition metal complexes such as Ir(III), 14 Cu(II), 15e17 Fe(II), 18e21 Pd(II) and Pt(II), 22 Cr(III) 23e25 and Ni(II) 26 has been described. 2-Picolylamine-based multidentate ligands have also been also used in Zn(II), 27,28 Pt(II), 29 Cu(II) and Mn(II) 16,30 complexes.…”

Syntheses, Structures and Characterization of Two Ni(II) and Pb(II) Coordination Polymers Constructed by 2-(4-Fluorophenyl)-1Himidazo[ 4,5-f][1,10]phenanthroline and Flexible 4,4’-Oxybis(benzoate) Ligands

“…7). For 1, the χ m T value at 300 K is 1.046 cm 3 mol −1 K, which is corresponding to the expected value of noninteracting Ni(II) ions [19]. Upon cooling, the values of χ m T gradually increase, exhibit a maximum value of 1.138 cm 3 mol −1 K at 100 K, and then keep almost constant from 100 to 26 K before going down quickly to a minimum value of 0.622 cm 3 mol −1 K at 2 K. This feature shows the occurrence of a weak ferromagnetic coupling between the Ni(II) ions [20].…”