and +1.11 V for 6. The introduction of electron-withdrawing pyrazine rings to the spacer ligand retarded oxidation of the heptametal EMACs and stabilized the complexes. In nickel(II) species 1 and 2, both terminal nickel atoms exist in spin state S = 1 whereas all the inner nickel atoms exist in spin state S = 0. Temperature-dependent magnetic research revealed an antiferromagnetic interaction between
使用
吡嗪调节的低聚-α-
吡啶基
氨基
配体 N2-(pyrazin-2-yl)-N6-[6-(pyrazin-2-ylamino)pyridin-2-yl]pyridine-2,6-diamine (H3pzpz) 和 N2 -(pyrazin-2-yl)-N6-[6-(pyridin-2-ylamino)pyridin-2-yl]pyridine-2,6-diamine (H3tpz), 线性七
金属 (II) 扩展
金属原子链 (
EMACs) [M7(μ7-L)4X2] [L = pzpz3–, M = NiIII, X = Cl– (1),
NCS– (2); M = CrII,X = Cl– (3),
NCS– (4);L = tpz3–, M = CrII, X = Cl– (5),
NCS– (6)] 被合成和结构表征。电
化学研究表明,庚
镍 (II) 配合物可以在 +0.46 V 和 +0