A new flexible multidentate hydrogenated Schiff base tris2-[(4′-pyridylmethyl)amino]ethyl}amine (L), derived from tren (tris(2-aminoethyl)amine) and 4-pyridinecarboxaldehyde, has been used to prepare four novel complexes 1–4. Complex [Zn1.5L(H2O)3](NO3)3·2.5H2O}2 (1) exhibits a mononuclear zero-dimensional structure. Complex [Cd2LCl4(H2O)]·H2O}n (2) shows a one-dimensional meso-helical structure which consists of two adjacent hydrogen-bonded three-stranded single-helical (P and M) chains. Intermolecular CH (or NH)⋯Cl hydrogen bonds play important roles in the formation of the triple helices and meso-helical structure. Complexes [Cd1.5L(NO3)2(H2O)]NO3·2H2O}n (3) and [Mn1.5LCl2(H2O)]Cl·6H2O}n (4) display similar 2D layer networks, which are composed of alternate right-handed and left-handed helical chains by sharing Cd or Mn ions. Moreover, the photoluminescence of complexes 1–3 have also been investigated in the solid state.
一种新的柔性多齿
氢化席夫碱三2-[(4′-
吡啶基
甲基)
氨基]乙基}胺(L)由三(2-
氨基乙基)胺(tren)和
4-吡啶甲醛衍生而来,可用于制备四种新型配合物1-4。配合物[Zn1.5L(
H2O)3](
NO3)3·2.5 }2(1)具有单核零维结构。配合物[Cd2LCl4( )]· }n(2)具有一维中螺旋结构,由两条相邻的
氢键三股单螺旋(P和M)链组成。分子间CH(或NH)⋯Cl
氢键在三重螺旋和中螺旋结构的形成中起着重要作用。配合物[Cd1.5L( )2( )] ·2 }n(3)和[Mn1.5LCl2( )]Cl·6 }n(4)具有相似的二维层状网络结构,由共享Cd或Mn离子的交替右旋和左旋螺旋链组成。此外,还对固态下配合物1-3的光致发光进行了研究。