Synthesis and Properties of Diphenoxo-Bridged Co<sup>II</sup>, Ni<sup>II</sup>, Cu<sup>II</sup>, and Zn<sup>II</sup> Complexes of a New Tripodal Ligand: Generation and Properties of M<sup>II</sup>-Coordinated Phenoxyl Radical Species
作者:Atasi Mukherjee、Francesc Lloret、Rabindranath Mukherjee
DOI:10.1021/ic701283b
日期:2008.6.2
center assumes M (II)N 2O 3 coordination. Whereas the geometry around the metal ion in 1.0.5 1,4-dioxane, 2.2 diethyl ether and, 4.0.5 1,4-dioxane is distorted trigonal-bipyramidal, in 3 each copper(II) center is in a square-pyramidal environment. Temperature-dependent magnetic behavior has been investigated to reveal intramolecular antiferromagnetic exchange coupling for these compounds (-J=6.1, 28.6
组成为[MII2(L)2] .xS的四种双核络合物[M = Co,x = 0.5,S = 1,4-二恶烷(1.0.5 1,4-二恶烷); Ni,x = 0(2)[单晶具有x = 2,S =二乙醚(2.2二乙醚)]; n = 1。Cu,x = 0(3); n = 1。使用新的三脚架配体[2,4-二叔丁基-6-[(2-吡啶基)[]乙基](2-羟基苄基)-氨基甲基}-苯酚(H2L)],以去质子化形式提供N 2O 2供体。晶体学分析表明,该配合物具有相似的联苯氧基桥联结构。每个金属离子在末端都被2,4-二叔丁基苯酚氧,叔胺和吡啶基氮配位。对于每个配体,未取代的酚盐氧可提供桥联配位。因此,每个金属中心都假设M(II)N 2O 3配位。而在1.0.5 1,4-二恶烷2中,金属离子周围的几何形状。2个乙醚和4.0.5 1,4-二恶烷是扭曲的三角双锥体,每个3的铜(II)中心都位于正方形锥体的环境中。已