在水热体系中, 以2,2'-(乙烯二氧)双(乙胺)为模板剂, 合成了3种含二价金属杂原子的开放骨架磷酸铝化合物M(Ⅱ)-CJ50(|C6H17N2O2| [MAl3P4O16], 其中M=Mg, Mn和Fe). 单晶及粉末X射线衍射分析表明, 这3种化合物与以咪唑为模板剂合成的含三价金属杂原子的M(Ⅲ)-CJ50具有相似的骨架拓扑结构. 二者的区别在于: 由于使用了还原性较强的醚胺作模板剂, M(Ⅱ)-CJ50结构中的金属杂原子具有比M(Ⅲ)-CJ50更低的氧化态; M(Ⅱ)-CJ50中的金属杂原子与1个醚胺模板剂分子中的2个醚氧原子形成双齿配位, 而M(Ⅲ)-CJ50中的金属杂原子则与2个咪唑模板剂分别形成单齿配位. 此外, 磁性测试结果表明, 由于金属杂原子的氧化态以及配体模板剂分子的差异, 导致M(Ⅱ)-CJ50中的过渡金属杂原子处于电子高自旋态, 而M(Ⅲ)-CJ50中的杂原子则处于低自旋态.
Three divalent-metal-containing open-framework aluminophosphates, designated M(Ⅱ)-CJ50, (|C6H17N2O2| [MAl3P4O16], M=Mg, Mn and Fe), have been hydrothermally synthesized using 2,2'-(ethylenedioxy)bis(ethylamine) as the organic template. Single crystal and powder X-ray diffraction analyses show that their structures are similar to those of trivalent-metal-containing aluminophosphates M(Ⅲ)-CJ50 synthesized by using imidazole as template. The differences between M(Ⅱ)-CJ50 and M(Ⅲ)-CJ50 are: hetero-metal atoms in M(Ⅱ)-CJ50 have lower oxidation states owing to the usage of ether amine; in M(Ⅱ)-CJ50, hetero-metal atoms are coordinated to the two O atoms in each ether amine molecule, whereas in M(Ⅲ)-CJ50 hetero-metal atoms are coordinated to pairs of imidazole molecules through single N atoms. Moreover, magnetic measurements reveal that the hetero-metal atoms in M(Ⅱ)-CJ50 are high-spin whereas those in M(Ⅲ)-CJ50 are low-spin owing to the differences in ligand molecules and oxidation states of hetero-metal atoms.