论文部分内容阅读
A novel compound [Co(IM2-Py)2(NO3)]?(NO3) (IM2-Py = 2-(2?-pyridyl)-4,4,5,5- tetramethylimidazoline-1-oxyl) has been prepared and structurally characterized by X-ray diffrac- tion method. It crystallizes in orthorhombic, space group P212121 with a = 11.031(2), b = 13.492(3), c = 20.467(4) ?, V = 3046.0(11) ?3, C24H32CoN8O8, Mr = 619.51, Z = 4, Dc = 1.351 g/cm3, μ(MoKα) = 0.620 mm?1, F(000) = 1292, R = 0.0506 and wR = 0.0845 for 3752 observed reflections with I > 2σ(I). X-ray analysis reveals that the crystal structure consists of [Co(IM2- Py)2(NO3)]+ moiety and a NO3 anion. The cobalt(II) ion is six-coordinated with a distorted octahedral geometry. Tempera- ? ture dependence of susceptibility measurements show that there exist an antiferromagnetic inter- action in the compound.
A novel compound [Co (IM2-Py) 2 (NO3)]? (NO3) (IM2-Py = 2- (2? -pyridyl) -4,4,5,5-tetramethylimidazoline-1-oxyl) has been prepared It crystallizes in orthorhombic space group P212121 with a = 11.031 (2), b = 13.492 (3), c = 20.467 (4) ?, V = 3046.0 3, C24H32CoN8O8, Mr = 619.51, Z = 4, Dc = 1.351 g / cm3, μ (MoKα) = 0.620 mm -1, F (000) = 1292, R = 0.0506 and wR = 0.0845 for 3752 observed reflections with I> X-ray analysis reveals that the crystal structure consists of [Co (IM2-Py) 2 (NO3)] + moiety and a NO3 anion. The cobalt (II) ion is six- coordinated with a distorted octahedral geometry Tempera-? Ture dependence of susceptibility measurements show that there exist an antiferromagnetic inter- action in the compound.