Attachment of N,N-bis(2-pyridylmethyl)amine (L1) and N-(2-pyridylmethyl)glycine (L2) ligands on the azide-functionalized SBA-15 type mesoporous silica support and subsequent insertion of metal salts into the ligand-immobilized supports yielded heterogeneous metal complex catalysts, M(A)/SBA*-Ln-x, where M, A, *, n, and x indicate the metal ion (Mn^II, Fe^II, Co^II, Ni^II, Cu^II), counter anion (Cl, OAc, OTf), trimethylsilyl end-capped silica, the numbering of the ligands, and the initial content of the azide tether group (tether/Si mol%) respectively. The cyclohexane oxidation activity of these immobilized catalysts and corresponding homogeneous complexes have been evaluated with the use of m-chloroperbenzoic acid as an oxidant. The activity of the immobilized catalysts is influenced by the ligand density on the support. Both the site-isolated immobilized catalysts and the related homogeneous catalysts of ligand L1 show similar trends of their final TONs on the type of metal ions (Co ≈ Ni > Fe > Mn > Cu). These results suggest that all of the metal complex sites are successfully immobilized without structural changes under the site-isolated condition. The reactivity trends of the complexes with the L2 ligand and their dependence on the ligand density were complicated. The observed results may be explained by the formation of cluster complexes via bridging carboxylate moieties of the ligand.

N，N-双（2-吡啶基甲基）胺（L1）和N-（2-吡啶基甲基）甘氨酸（L2）配体在叠氮化物官能化的SBA-15型介孔二氧化硅载体上的附着以及随后将金属盐插入到配体中固定化的载体得到非均相金属络合物催化剂M（A）/ SBA * -L n - x，其中M，A，*，n和x表示金属离子（Mn ^II，Fe ^II，Co ^II，Ni ^II，铜^II），抗衡阴离子（Cl，OAc，OTf），三甲基甲硅烷基封端的二氧化硅，配体的编号和叠氮化物系链基团的初始含量（系链/ Si mol％）。这些固定化的催化剂和相应的均质复合物的环己烷氧化活性进行了评价与使用米氯过苯甲酸作为氧化剂。固定催化剂的活性受载体上配体密度的影响。位置分离的固定催化剂和配体L1的相关均相催化剂在金属离子类型上显示出最终TON的相似趋势（Co≈Ni> Fe> Mn> Cu）。这些结果表明，在位点隔离的条件下，所有金属络合物位点均被成功固定，而没有结构变化。与L2配体的配合物的反应趋势及其对配体密度的依赖性是复杂的。可以通过桥接配体的羧酸根部分形成簇复合物来解释观察到的结果。