Synthesis, structures and magnetic properties of 2-aminomethylpyridine–Ni(II) complexes
摘要:
A family of complexes of Ni(II), 2-aminomethylpyridine (ampy) and tricyanomethanide (tcm) have been prepared and studied by IR, X-ray crystallography and variable temperature susceptibility. The complexes synthesized include [Ni(ampy)(3)](ClO4)(2) (1), [Ni(ampy)(3)](tcm)(PF6) (2), [Ni(ampy)(3)](PF6)(2) (3), [Ni(ampy)(2)(H2O)(2)]Cl-2 (4), and [Ni(ampy)(2)(tcm)(2)] (5). No coordination polymers of tcm were obtained. The magnetic behavior of the complexes, and the known material [Ni(ampy)(NO3)(2)], is dominated by single-ion anisotropy effects with D-values in the range of -2 to -12 K, although some compounds show a weak antiferromagnetic interaction. (c) 2005 Elsevier B.V. All rights reserved.