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Poly[[hemi-?(4)-oxalato-hemi-?(2)-oxalato-bis-(?(3)-pyrazine-2-carboxyl-ato)neodymium(III)silver(I)] monohydrate].


ABSTRACT: In the title coordination polymer, {[AgNd(C(5)H(3)N(2)O(2))(2)(C(2)O(4))]·H(2)O}(n), the Nd(III) atom is coordinated in a distorted monocapped square-anti-prismatic geometry by two O and two N atoms of two N,O-bidentate pyrazine-2-carboxyl-ate (2-pzc) ligands, four O atoms of two bidentate oxalate ligands, and one O atom of a monodentate carboxyl-ate group of a 2-pzc ligand. The Ag(I) ion is coordinated in a distorted tetra-hedral geometry by two N atoms from two monodentate 2-pzc ligands, one O atom from one monodentate oxalate ligand and one O atom of a bridging carboxyl-ate group of a 2-pzc ligand. The oxalate anions link neighbouring neodymium(III) metal centres into Nd-oxalate chains, which are inter-connected by Ag(2-pyz)(2) units, forming a three-dimensional polymeric framework. Inter-molecular O-H?O and C-H?O hydrogen bonds are observed in the crystal structure.

SUBMITTER: Feng TJ 

PROVIDER: S-EPMC2969187 | biostudies-literature | 2009 Jun

REPOSITORIES: biostudies-literature

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Poly[[hemi-μ(4)-oxalato-hemi-μ(2)-oxalato-bis-(μ(3)-pyrazine-2-carboxyl-ato)neodymium(III)silver(I)] monohydrate].

Feng Tian-Jun TJ   Wen Yan-Mei YM  

Acta crystallographica. Section E, Structure reports online 20090627 Pt 7


In the title coordination polymer, {[AgNd(C(5)H(3)N(2)O(2))(2)(C(2)O(4))]·H(2)O}(n), the Nd(III) atom is coordinated in a distorted monocapped square-anti-prismatic geometry by two O and two N atoms of two N,O-bidentate pyrazine-2-carboxyl-ate (2-pzc) ligands, four O atoms of two bidentate oxalate ligands, and one O atom of a monodentate carboxyl-ate group of a 2-pzc ligand. The Ag(I) ion is coordinated in a distorted tetra-hedral geometry by two N atoms from two monodentate 2-pzc ligands, one O  ...[more]

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