Many MOFs based on various metal ions including s-, p-, d-, and f-block elements have been developed over the past decade. Despite their abundance, low cost, and non-toxicity, s-block MOFs have been explored less frequently than those based on transition metals and f-block metal ions. Sequential calcium carboxylate-based linker MOFs (Ca-MOFs) were successfully synthesized and constructed using a solvothermal system and coordination bonding. Sequential Ca-MOFs were subjected to 13 different environments to thoroughly examine their framework stability. The investigation demonstrated a calcium-carboxylate-based linker possessing superior robustness towards hydrolysis, Brønsted–Lowry acid–bases, and polarity stability from crystallite modification through the XRD spectrum before and after exposure. In this study, the Ca-H₂BDC framework was found to be highly chemically stable with almost no observed crystallite modifications. The stability of sequential calcium-carboxylate-based linker MOFs reflects strong coordination bonding according to the hard soft acid base (HSAB) principle.

在过去的十年里，人们开发出了许多基于各种金属离子（包括 s、p、d 和 f 区元素）的 MOF。尽管s-嵌段MOFs丰富、成本低且无毒，但其研究频率低于基于过渡金属和f-嵌段金属离子的MOFs。使用溶剂热系统和配位键合成功合成和构建了基于连续羧酸钙的连接体MOF（Ca-MOF）。序列 Ca-MOF 经受了 13 种不同的环境，以彻底检查其框架稳定性。研究表明，基于羧酸钙的连接体对水解、Brønsted-Lowry 酸碱和通过曝光前后 XRD 光谱进行微晶修饰的极性稳定性具有卓越的鲁棒性。在这项研究中，发现Ca-H ₂ BDC 框架具有高度化学稳定性，几乎没有观察到微晶修饰。基于连续羧酸钙的连接体 MOF 的稳定性反映了根据硬软酸碱 (HSAB) 原理的强配位键合。