Li Meng-Jiao, Nie Jing-Jing, Xu Duan-Jun
Department of Chemistry, Zhejiang University, People's Republic of China.
Acta Crystallogr Sect E Struct Rep Online. 2010 Jun 26;66(Pt 7):m840. doi: 10.1107/S1600536810023895.
In the title compound, Co(C(4)H(4)O(4))(C(9)H(7)N)(2)(H(2)O)(2), the Co(II) cation, located on an inversion center, is coordinated by two succinate anions, two isoquinoline ligands and two water mol-ecules in a distorted octa-hedral geometry. The succinate anion, located across another inversion center, bridges the Co cations, forming polymeric chains running along the b axis. The partially overlapped arrangement of parallel isoquinoline ring systems of adjacent polymeric chains and the shorter face-to-face distance of 3.402 (6) Å indicates the existence of weak π-π stacking in the crystal structure. Classical intra- and inter-molecular O-H⋯O hydrogen bonding and weak non-classical inter-molecular C-H⋯O hydrogen bonding help to stabilize the crystal structure.
在标题化合物[Co(C₄H₄O₄)(C₉H₇N)₂(H₂O)₂]ₙ中，位于对称中心的Co(II)阳离子由两个琥珀酸根阴离子、两个异喹啉配体和两个水分子以扭曲的八面体几何构型配位。位于另一个对称中心的琥珀酸根阴离子桥连Co阳离子，形成沿b轴延伸的聚合物链。相邻聚合物链的平行异喹啉环系统部分重叠排列以及3.402 (6) Å的较短面对面距离表明晶体结构中存在弱π-π堆积。经典的分子内和分子间O—H⋯O氢键以及弱的非经典分子间C—H⋯O氢键有助于稳定晶体结构。
