Starosta Wojciech, Leciejewicz Janusz
Institute of Nuclear Chemistry and Technology, ul.Dorodna 16, 03-195 Warszawa, Poland.
Acta Crystallogr Sect E Struct Rep Online. 2011 Aug 1;67(Pt 8):m1133-4. doi: 10.1107/S160053681102887X. Epub 2011 Jul 23.
The polymeric structure of the title compound {[Li(C(6)H(3)N(2)O(4))(H(2)O)]·H(2)O}(n), contains two symmetry-independent Li(I) complex units, both having distorted trigonal-bipyramidal coordination environments. The Li(I) ions are bridged by both the N and O atoms of the ligands, generating two symmetry-independent polymeric chains propagating along the b-axis direction. In both ligands, the second carboxyl-ato O atom remains protonated, serving as a donor in a short intra-molecular O-H⋯O hydrogen bond. The coordination of each Li(I) ion is completed by a water O atom. The ribbons are held together by a network of O-H⋯O hydrogen bonds in which the coordinated and uncoordinated water mol-ecules are donors and the carboxyl-ato O atoms act as acceptors.
标题化合物{[Li(C₆H₃N₂O₄)(H₂O)]·H₂O}ₙ的聚合物结构包含两个对称独立的Li(I)络合物单元，二者均具有扭曲的三角双锥配位环境。Li(I)离子通过配体的N和O原子桥连，生成两条沿b轴方向延伸的对称独立的聚合物链。在两个配体中，第二个羧基O原子保持质子化，在短程分子内O-H⋯O氢键中作为供体。每个Li(I)离子的配位由一个水分子的O原子完成。这些带状结构通过O-H⋯O氢键网络维系在一起，其中配位和未配位的水分子作为供体，羧基O原子作为受体。
