Structural control of polynuclear complexes and their chromotropic behaviors

如关键词栏所述，我们研究了（1）混合配体配合物的形成，（2）所得配合物的变色行为的溶液研究，（3）双核或多核配合物的形成。对于混合配体络合物的形成，我们可以通过拉伸的薄硬极化电子光谱和理论计算来解释π-碱和π-酸分子内配体间相互作用（如bipy（2，2 '-bipyridine或1，10-phenanthroline）和pyca（catecholate））的可选择结合这一重要概念。对于配合物的变色行为，我们可以得到新型的三酮取代四酮，它可以与N-烷基化乙二胺形成单核配合物。它们表现出溶致变色性和热致变色性。我们得到了双核和三核Pd（II）与四酮桥联配体和β-二酮酯的混合配体配合物。

As mentioned in the key-words column, we have studied (1) formation of mixed ligand complexes, (2) solution studies of chromotropic behaviors of the complexes obtained, (3) formation of the dinuclear or polynuclear complexes. For the formation of mixed ligand complex, we could explain the important concept as the siutable combination between pi-base and pi-acid intra-molecular inter-ligand interaction (for example, bipy (2,2'-bipyridine or 1,10-phenanthroline) and pyca (catecholate)) by means of stretched thin firm polarized electronic spectra and theoretical calculations. For the chromotropic behaviors of the complexes, we could obtain new type of the triketonate instead of tetraketone which can forms mononuclear complexes of Cu (II) ion with N-alkylate ethylenediamine. They showed solvatochromism, and thermochomism. We have obtained dinuclear and trinuclear Pd (II) complexes with tetraketonate bridging ligand and beta-diketpnate also as the mixed ligand complexes.