二水双（2-羟基苯甲酸根-κO）双（1,10-菲咯啉-κ2N,N'）锶（II）中的分子内π-π堆积
Intramolecular pi-pi stacking in diaquabis(2-hydroxybenzoato-kappaO)bis(1,10-phenanthroline-kappa2N,N')strontium(II).
作者信息
Xu Duan-Jun, Zhang Bing-Yu, Su Jian-Rong, Nie Jing-Jing
机构信息
Department of Chemistry, Zhejiang University, People's Republic of China.
出版信息
Acta Crystallogr C. 2007 Dec;63(Pt 12):m622-4. doi: 10.1107/S0108270107050597. Epub 2007 Nov 30.
In the title compound, [Sr(C7H5O3)2(C12H8N2)2(H2O)2], the Sr(II) ion is located on a twofold rotation axis and assumes a distorted square-antiprism SrN4O4 coordination geometry, formed by two phenanthroline (phen) ligands, two 2-hydroxybenzoate anions and two water molecules. Within the mononuclear complex molecule, intramolecular pi-pi stacking is observed between nearly parallel coordinated phen ligands, while normal intermolecular pi-pi stacking occurs between parallel phen ligands of adjacent complex molecules. Classic O-H...O and weak C-H...O hydrogen bonding helps to stabilize the crystal structure.
在标题化合物[Sr(C₇H₅O₃)₂(C₁₂H₈N₂)₂(H₂O)₂]中，Sr(II)离子位于二重旋转轴上，呈现出扭曲的四方反棱柱SrN₄O₄配位几何构型，该构型由两个邻菲罗啉（phen）配体、两个2-羟基苯甲酸根阴离子和两个水分子形成。在单核配合物分子内，在近乎平行配位的phen配体之间观察到分子内π-π堆积，而在相邻配合物分子的平行phen配体之间发生正常的分子间π-π堆积。经典的O-H...O和弱的C-H...O氢键有助于稳定晶体结构。
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