Abstract

The redetermined structure of the title compound, [Mn(C4H5NO4)(H2O)2]n, including the full hydrogen-bonding scheme, is reported; the original report was by Zhang & Lu [Acta Cryst. (2004). E60, m1189–m1190]. The structure contains polymeric chains of MnII cations bridged by imino­di­acetate (IDA) dianions. The manganese species assumes a distorted octahedral coordination geometry, formed by two IDA mol­ecules (one tridentate and one monodentate) and two water mol­ecules. The tridentate IDA chelates to the Mn atom in the facial configuration; one chelating five-membered ring is almost planar and the other adopts an envelope configuration. A significant difference of 0.118 (2) A in Mn—Ocarboxyl bond distances is observed within the chelating IDA moiety.

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