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metal-organic compounds
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The structure of the title compound, [Co(C5H6NO4)3], consists of a CoIII ion octahedrally coordinated by three bidentate 3-nitropentane-2,4-dionate ligands. The complex was prepared via the nitration of tris(2,4-pentanedionato-κ2O,O′)cobalt(III) with a solution of copper(II) nitrate in glacial acetic acid. The central C atom and the nitro group of one 3-nitropentane-2,4-dionate ligand are disordered over two positions with an occupancy ratio of 0.848 (4):0.152 (4). A second nitro group is also disordered over two orientations with an occupancy ratio of 0.892 (7):0.108 (7). Two of the ligand methyl groups form C—H
O interactions with two different nitro groups to form chains running along the c axis. Additional C—HO interactions are found between ligand methyl groups and the cobalt-bound O atoms, also resulting in the formation of chains along the c axis.
O interactions with two different nitro groups to form chains running along the c axis. Additional C—HO interactions are found between ligand methyl groups and the cobalt-bound O atoms, also resulting in the formation of chains along the c axis.metal-organic compoundsOpen access
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In the title compound, cis-[PtCl2(NH3)2]·C3H7NO, the metal complex molecules are stacked parallel to the b axis, forming close PtPt interactions of 3.4071 (7) and 3.5534 (8) Å and weak N—HCl hydrogen bonds between the ammine ligand and the Cl atoms of the neighboring complex. Conventional N—HO hydrogen bonds are formed between ammine ligands and the O atom of adjacent N,N-dimethylformamide molecules. The crystal was found to be a split crystal and was analyzed using two domains related by a rotation of ca 4.4° about the reciprocal axis (−0.351 1.000 0.742) and refined to give a minor component fraction of 0.084 (6).
Pt interactions of 3.4071 (7) and 3.5534 (8) Å and weak N—HCl hydrogen bonds between the ammine ligand and the Cl atoms of the neighboring complex. Conventional N—HO hydrogen bonds are formed between ammine ligands and the O atom of adjacent N,N-dimethylformamide molecules. The crystal was found to be a split crystal and was analyzed using two domains related by a rotation of ca 4.4° about the reciprocal axis (−0.351 1.000 0.742) and refined to give a minor component fraction of 0.084 (6).
