spectroscopy as well as cyclic voltammetry. All data are consistent with macrocyclic formation by condensation. The complexes adopt a distorted square planar geometry resulting from the chelating behaviour of the corresponding ligands. The EPR spectra recorded after the addition of Cu(II) complexes into the corresponding Ni(II) complexes show a well resolved hyperfine structure with the superhyperfine pattern
六种类型为[M(dmbg)2 ]· n H 2 O的化合物((1)M:Ni,n = 0;(4)M:Cu,n = 1; Hdmbg:N,N'-二甲基双胍)和分别为[ML]· n H 2 O(其中(2)M:Ni,L:L 1,n = 0;(3)M:Ni,L:L 2,n = 0;(5)M: Cu,L:L 1,n= 0并且(6)M:Cu,L:L 2,n= 3,由(1)与
氨和
甲醛缩合产生的H 2 L 1:
配体和由(4)缩合产生的H 2 L 2:
配体)与
肼和
甲醛)通过NMR,电子顺磁共振(EPR)和UV-Vis光谱以及循环伏安法提供的信息被表征为单核物种。所有数据均与通过缩合形成大环相一致。由于相应
配体的螯合行为,络合物采用了扭曲的正方形平面几何形状。在将Cu(II)配合物添加到相应的Ni(II)配合物中后记录的EPR光谱显示了良好解析的超精细结构,其中超超精细模式对应于四个氮原子供体。E pc2的阴极