2,6-Diaminopyridinium bis(4-hydroxypyridine-2,6-dicarboxylato-κ3 O 2,N,O 6)ferrate(III) dihydrate
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چکیده
The reaction of iron(II) sulfate hepta-hydrate with the proton-transfer compound (pydaH)(hypydcH) (pyda = pyridine-2,6-diamine; hypydcH(2) = 4-hydroxy-pyridine-2,6-dicarboxylic acid) in an aqueous solution led to the formation of the title compound, (C(5)H(8)N(3))[Fe(C(7)H(3)NO(5))(2)]·2H(2)O. The anion is a six-coordinated complex with a distorted octa-hedral geometry around the Fe(III) atom. Extensive inter-molecular O-H⋯O, N-H⋯O and C-H⋯O hydrogen bonds, involving the complex anion, (pydaH)(+) counter-ion and two uncoordinated water mol-ecules, and π-π [centroid-to-centroid distance 3.323 (11) Å] and C-O⋯π [O-centroid distance 3.150 (15) Å] inter-actions connect the various components into a supra-molecular structure.
منابع مشابه
2,6-Diaminopyridinium bis(4-hydroxypyridine-2,6-dicarboxylato-κ3 O 2,N,O 6)chromate(III) dihydrate
The reaction of chromium(III) nitrate hexa-hydrate, pyridine-2,6-diamine and 4-hydroxy-pyridine-2,6-dicarboxylic acid in a 1:2:2 molar ratio in aqueous solution resulted in the formation of the title compound, (C(5)H(8)N(3))[Cr(C(7)H(3)NO(5))(2)]·2H(2)O or (pydaH)[Cr(hypydc)(2)]·2H(2)O (where pyda is pyridine-2,6-diamine and hypydcH(2) is 4-hydroxy-pyridine-2,6-dicarboxylic acid). Each Cr(III )...
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