%0 Journal Article
%T 2,6-Diaminopyridinium bis(4-hydroxypyridine-2,6-dicarboxylato-¦Ê3O2,N,O6)ferrate(III) dihydrate
%A Masoud Rafizadeh
%A Zohreh Derikvand
%A Andya Nemati
%J Acta Crystallographica Section E
%D 2008
%I International Union of Crystallography
%R 10.1107/s1600536808029280
%X The reaction of iron(II) sulfate heptahydrate with the proton-transfer compound (pydaH)(hypydcH) (pyda = pyridine-2,6-diamine; hypydcH2 = 4-hydroxypyridine-2,6-dicarboxylic acid) in an aqueous solution led to the formation of the title compound, (C5H8N3)[Fe(C7H3NO5)2]¡¤2H2O. The anion is a six-coordinated complex with a distorted octahedral geometry around the FeIII atom. Extensive intermolecular O¡ªH...O, N¡ªH...O and C¡ªH...O hydrogen bonds, involving the complex anion, (pydaH)+ counter-ion and two uncoordinated water molecules, and ¦Ð¨C¦Ð [centroid-to-centroid distance 3.323 (11)  ] and C¡ªO...¦Ð [O¨Ccentroid distance 3.150 (15)  ] interactions connect the various components into a supramolecular structure.
%U http://scripts.iucr.org/cgi-bin/paper?S1600536808029280