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Updated: May 27, 2026

Efficient Construction of Drug-like Bispirocyclic Scaffolds Via Organocatalytic Cycloadditions of α-Imino γ-Lactones and Alkylidene Pyrazolones
Published on: February 7, 2019
catena-Poly[[(aqualithium)-μ-3-carboxypyrazine-2-carboxylato-κO,N:O,N] monohydrate]
Wojciech Starosta1, Janusz Leciejewicz
1Institute of Nuclear Chemistry and Technology, ul.Dorodna 16, 03-195 Warszawa, Poland.
Abstract:
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.
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