Poly[[diaqua-μ4-pyrazine-2,3-dicarboxyl-ato-⁶ N,O ²:O ^2′:O ³,O ^3′:O ³-strontium(II)] monohydrate]

چکیده مقاله

In the title compound, {[Sr(C6H2N2O4)(H2O)2]·H2O} n , the Sr ^II ions are bridged by the pyrazine-2,3-dicarboxyl-ate ligands with the formation of two-dimensional polymeric layers parallel to the ac plane. Each Sr^II ion is eight-coordinated by one N and five O atoms from the four ligands and two water mol-ecules. The coordination polyhedron is derived from a penta-gonal bipyramid with an O atom at the apex on one side of the equatorial plane and two O atoms sharing the apical site on the other side. The coordinated and uncoordinated water mol-ecules are involved in O - H⋯O and O - H⋯N hydrogen bonds, which consolidate the crystal structure. © 2008.