Odoko Mamiko, Ise Tomoyasu, Okabe Nobuo
Faculty of Pharmaceutical Sciences, Kinki University, Kowakae 3-4-1, Higashiosaka, Osaka 577-8502, Japan.
Acta Crystallogr C. 2007 Jan;63(Pt 1):m22-6. doi: 10.1107/S010827010605102X. Epub 2006 Dec 23.
Both title compounds are polynuclear polymeric complexes with binuclear units. In the former compound, [Ag2(C8H7O2)2(C10H9N3)]n, the two Ag(I) atoms display distorted square-planar coordinations. This compound contains a twofold axis and a crystallographic inversion centre, and di-2-pyridylamine (DPA) ligands crosslink adjacent binuclear units to form infinite polymeric chains. Crystal packing is stabilized by van der Waals interactions and partial pi-pi stacking interactions between the chains. The latter compound, [Ag2(C7H4NO4)2(C10H9N3)]n, contains crystallographic inversion centres and the two Ag(I) atoms exhibit two types of distorted square-pyramidal coordination. Ag-Ag argentophilic interactions and Ag-O crosslinking between adjacent binuclear units contribute to form infinite polymeric chains. Weak pi-pi stacking interactions are observed in the polymer chain. Crystal packing is stabilized by C-H...O hydrogen bonds and by weak pi-pi stacking interactions.
这两种标题化合物均为具有双核单元的多核聚合物配合物。在前一种化合物[Ag2(C8H7O2)2(C10H9N3)]n中，两个Ag(I)原子呈现出扭曲的平面正方形配位。该化合物包含一个二重轴和一个晶体学反演中心，二-2-吡啶胺（DPA）配体交联相邻的双核单元形成无限的聚合物链。晶体堆积通过范德华相互作用和链间的部分π-π堆积相互作用得以稳定。后一种化合物[Ag2(C7H4NO4)2(C10H9N3)]n包含晶体学反演中心，且两个Ag(I)原子呈现出两种类型的扭曲四方锥配位。相邻双核单元之间的Ag-Ag亲银相互作用和Ag-O交联有助于形成无限的聚合物链。在聚合物链中观察到弱的π-π堆积相互作用。晶体堆积通过C-H...O氢键和弱的π-π堆积相互作用得以稳定。
