Versatility of the nature of the magnetic Cu(<scp>ii</scp>)–U(<scp>iv</scp>) interaction. Syntheses, crystal structures and magnetic properties of Cu<sub>2</sub>U and CuU compounds
作者:Lionel Salmon、Pierre Thuéry、Eric Rivière、Jean-Jacques Girerd、Michel Ephritikhine
DOI:10.1039/b304414a
日期:——
Treatment of [M(H2Li)] with U(acac)4 in refluxing pyridine led to the formation of the trinuclear complexes [MLi(py)x}2U] [L1 = N,N′-bis(3-hydroxysalicylidene)-2,2-dimethyl-1,3-propanediamine and M = Ni, Cu or Zn; L2 = N,N′-bis(3-hydroxysalicylidene)-1,3-propanediamine and M = Cu or Zn; L3 = N,N′-bis(3-hydroxysalicylidene)-2-methyl-1,2-propanediamine and M = Ni, Cu or Zn; x = 0 or 1]. The dinuclear
用U(acac)4回流处理[M(H 2 L i)]吡啶导致形成三核配合物[ML i(py)x } 2 U] [L 1 = N,N'-双(3-羟基水杨基)-2,2-二甲基-1,3-丙二胺,M =镍,铜或锌;L 2 = N,N'-双(3-羟基水杨基)-1,3-丙二胺M =铜或锌;L 3 = N,N′-双(3-羟基水杨基)-2-甲基-1,2-丙二胺,M = Ni,Cu或Zn。x = 0或1]。从[M(H 2 L 3)]与U(acac)4的反应中分离出双核化合物[ML 3(py)U(acac)2 ](M = Cu,Zn)。吡啶在60°C下。三核络合物的晶体结构由两个正交的ML i(py)x单元建立,它们通过两对氧原子连接到中心铀离子。希夫碱 配体; 在相同的十二面体结构中发现了U(IV)离子,但是由于Diimino链的缩短,从L 1或L 2到L 3传递时,Cu(II)离子的配位几何形状和Cu⋯U距离是不同的的L