聚[二-μ(2)-水-μ(2)-(5-甲基-吡嗪-2-羧基-ato)-(5-甲基-吡嗪-2-羧基-ato)-μ(3)-硝酸根-三锂]
Poly[di-μ(2)-aqua-μ(2)-(5-methyl-pyrazine-2-carboxyl-ato)-(5-methyl-pyrazine-2-carboxyl-ato)-μ(3)-nitrato-trilithium].
作者信息
Starosta Wojciech, Leciejewicz Janusz
机构信息
Institute of Nuclear Chemistry and Technology, ul.Dorodna 16, 03-195 Warszawa, Poland.
出版信息
Acta Crystallogr Sect E Struct Rep Online. 2011 Jul 1;67(Pt 7):m1000-1. doi: 10.1107/S1600536811024548. Epub 2011 Jun 30.
The asymmetric unit of the title compound, Li(3)(C(6)H(5)N(2)O(2))(2)(NO(3))(H(2)O)(2) contains three Li(I) ions, two ligand anions, two water mol-ecules and a nitrate anion. Related by a centre of inversion, they form a centrosymmetric mol-ecular cluster in which one of the Li(I) ions shows trigonal-bipyramidal and the other two distorted tetra-hedral coordination. Li(I) ions are bridged by water O atoms and carboxyl-ate O atoms donated by one of the ligands. The clusters, bridged by two nitrato O atoms, form mol-ecular columns along [010], which are held together by O-H⋯O and O-H⋯N hydrogen bonds and π-π inter-actions [centroid-centroid distances = 3.694 (1) and 3.796 (1) Å].
标题化合物[Li₃(C₆H₅N₂O₂)₂(NO₃)(H₂O)₂]ₙ的不对称单元包含三个Li⁺离子、两个配体阴离子、两个水分子和一个硝酸根阴离子。通过一个反演中心相关联，它们形成一个中心对称的分子簇，其中一个Li⁺离子呈现三角双锥构型，另外两个呈现扭曲的四面体配位。Li⁺离子由水分子的O原子和一个配体提供的羧酸根O原子桥连。这些簇通过两个硝酸根O原子桥连，沿着[010]形成分子柱，它们通过O—H⋯O和O—H⋯N氢键以及π—π相互作用[质心 - 质心距离 = 3.694 (1) 和3.796 (1) Å]维系在一起。
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