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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:The coordination of the 3-cyano-4-dicyanomethylene-5-oxo-4,5- dihydro-1H-pyrrol-2-olate anion to Zn-II, the apical sites of which are occupied by two water molecules, results in the formation of two-dimensional layers of the title coordination polymer, {[Zn(C8HN4O2)(2)(H2O)(2)] center dot 2H(2)O}(n), in which the Zn-II cations lie on inversion centres in space group C2/c, with water ligands in the apical sites of octahedral geometry. Hydrogen bonds between coordinated and lattice water molecules, and pi-pi stacking interactions between the anions link adjacent layers into a continuous framework.