A Reversible Structural Interconversion Involving [M(H2pdc)2(H2O)2]⋅2 H2O (M=Mn, Fe, Co, Ni, Zn, H3pdc=3,5-pyrazoledicarboxylic acid) and the Role of A Reactive Intermediate [Co(H2pdc)2]
作者:Long Pan、Nancy Ching、Xiaoying Huang、Jing Li
DOI:10.1002/1521-3765(20011015)7:20<4431::aid-chem4431>3.0.co;2-p
日期:2001.10.15
dehydrated [M(H2pdc)2] (M = Mn, Fe, Co, Ni, and Zn) are amorphous and highly reactive. Further chemical reactions of these reactive intermediates show that they may act as effective precursors towards assembly of new supramolecular compounds that may otherwise be inaccessible by other synthetic routes. An interesting structure containing an "open-box" molecule [Co4(Hpdc)4(py)12] . 4py . 2H2O . 2CH3OH (6)
一种新型的氢键网络[M(H2pdc)2(H2O)2]。2H 2 O [M = Mn(1),Fe(2),Co(3),Ni(4),Zn(5);通过水热反应合成了H3pdc = 3,5-吡唑二羧酸,并对其结构进行了表征。在冷却-加热循环中,这些化合物通过水合-脱水进行可逆的结构互变过程:[化学方程式:参见文本]。该过程与明显的颜色变化相关。脱水的[M(H2pdc)2](M = Mn,Fe,Co,Ni和Zn)是非晶态的,具有很高的反应性。这些反应性中间体的进一步化学反应表明,它们可以作为组装新的超分子化合物的有效前体,否则这些新的超分子化合物可能无法通过其他合成途径获得。包含“开箱”分子[Co4(Hpdc)4(py)12]的有趣结构。4年 2H2O。通过使用脱水的[Co(H2pdc)2]作为前驱物,分离出2CH3OH(6)(py =吡啶),并对其晶体结构进行了分析。1-6的晶体数据:单斜晶,空间群P2(1