fully characterized. While temperature independent low‐spin states were recorded with superconducting quantum interference device (SQUID) measurements for both, the open precursor 8 and the interlinked complex 1, evidence of the increased rigidity of the ligand sphere in 1 was provided by proton T2 relaxation NMR experiments. The ligand sphere fixation in the macrocyclized complex 1 even reaches a
Fe(II) 三联
吡啶配合物1的配位层通过两个三联
吡啶配体的四重互连而刚性化。受益于八醛前体络合物,在不可逆维蒂希烯化提供刚性络合物之前,互连结构的理想尺寸由可逆希夫碱形成决定。反相 HPLC 能够分离Fe(II) 三联
吡啶络合物1的全反式异构体,并对其进行了充分表征。虽然超导量子干涉装置 (SQUID) 测量记录了开放前体8和互连配合物1 的与温度无关的低自旋态,但质子 T 2弛豫 NMR提供了1中
配体球体刚性增加的证据实验。大环化配合物1中的
配体球固定甚至达到了在Au(111)表面沉积时抵抗显着变形的
水平,正如低温超高真空扫描隧道显微镜实验中其原始形式所证明的那样。