Department of Chemistry, Faculty of Sciences, Tarbiat Modares University, P.O. Box 14115-175, Tehran, Islamic Republic of Iran.
Inorg Chem. 2009 Dec 7;48(23):10871-3. doi: 10.1021/ic901532x.
A reversible crystal-to-crystal transformation of a new 2D lead(II) coordination polymer with the ligand 4-pyridinecarboxylic acid (4-Hpyc), Pb(4-pyc)(Br)(H(2)O) (1) to Pb(4-pyc)(Br) (2) by de- and rehydration, has been observed, and the structures of 1 and 2 have been determined by single-crystal X-ray diffraction. The thermal stabilities of compounds 1 and 2 were studied by thermal gravimetric and differential thermal analyses. Powder X-ray diffraction experiments showed that the structural transformation occurs in the batch powder samples and leads to monophasic products.
一种新的二维铅（II）配位聚合物与配体 4-吡啶甲酸（4-Hpyc）的可逆晶-晶转变，Pb(4-pyc)(Br)(H(2)O)（1）到Pb(4-pyc)(Br)（2）通过脱水和再水合来实现，已经被观察到，并且通过单晶 X 射线衍射确定了 1 和 2 的结构。通过热重和差示热分析研究了化合物 1 和 2 的热稳定性。粉末 X 射线衍射实验表明，结构转变发生在批量粉末样品中，并导致单相产物。
