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In the title compound, [Fe(C5H3N2O4)2]n, each Fe atom lies on a centre of symmetry, in an octahedral coordination environment consisting of two chelate rings [Fe—N = 2.154 (3) Å and Fe—O = 2.180 (3) Å] and two carboxyl­ate O atoms [Fe—O = 2.111 (2) Å] from imidazole-4,5-di­carboxyl­ate ligands. Extensive hydrogen-bonding interactions exist between layers constructed of Fe4 squares, forming tunnels along the a axis with large voids.

Document Type: Research Article


Publication date: June 1, 2004

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