Crystal structure of a third polymorph of tris(acetylacetonato-κ2 O,O′)iron(III)
نویسندگان
چکیده
In the structure of the title complex, [Fe(C5H7O2)3] or Fe(acac)3, the asymmetric unit contains one mol-ecule in a general position. The coordination sphere of the Fe(III) atom is that of a slightly distorted octahedron. The crystal under investigation was a two-component pseudo-merohedral twin in the monoclinic system with a β angle close to 90°. Twin law [100/0-10/00-1] reduced the R1 residual [I > 2σ(I)] from 0.0769 to 0.0312, and the mass ratio of twin components refined to 0.8913 (5):0.1087 (5). In the crystal, mol-ecules are arranged in sheets normal to [001] via non-classical C-H⋯O hydrogen bonding. No other significant inter-molecular inter-actions are observed. The structure is a new polymorph of Fe(acac)3 and is isotypic with one polymorph of its gallium analog.
منابع مشابه
(Acetylacetonato-κ2 O,O′)bis[2-(naphth[1,2-d][1,3]oxazol-2-yl)phenyl-κ2 C 1,N]iridium(III)
In the crystal structure of the title compound, [Ir(C(17)H(10)NO)(2)(C(5)H(7)O(2))], the Ir(III) atom is O,O'-chelated by the acetyl-acetonate group and C,N-chelated by the 2-aryl-naphth[1,2-d]oxazole groups. The six-coordinate metal atom displays a distorted octa-hedral geometry.
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