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In the title compound, [V(C15H11O2)2O(CH3OH)]·2CH3OH, the VIV atom is coordinated by two 1,3-diphenyl­propane-1,3-dionate ligands and an oxide ligand in an axial position. The sixth position is occupied by the O atom of a methanol group bonded trans to the oxide atom. The octa­hedral geometry is significantly distorted, with the VIV atom lying 0.330 (3) Å above the equatorial plane formed by the O atoms of the two β-diketonate ligands. In the crystal, O—H...O hydrogen bonds between the coordinating methanol group in the complex and the two methanol solvent mol­ecules lead to the formation of polymeric chains along the c-axis direction. Weak C—H...O contacts are also observed.

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In the title compound, [Rh(C10H9O2)(CO)2], a distorted square-planar coordination geometry is observed around the RhI atom, formed by the O atoms of the bidentate ligand and two C atoms from the carbonyl ligands. The RhI atom is displaced from the plane through the surrounding atoms by 0.017 Å. In the crystal, C—H...O inter­action is observed between a methyl group of the bidentate ligand and a carbonyl O atom. Metallophilic inter­actions [3.308 (3) and 3.461 (3) Å] between neighbouring RhI atoms are encountered in the crystal, resulting in the formation of a metal chain along the b-axis direction.

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The title compound [systematic name: 5-(trifluoro­meth­oxy)-1H-indole-2,3-dione], C9H4F3NO3, crystallized with two mol­ecules in the asymmetric unit. Inter­molecular N—H...O hydrogen bonds link the mol­ecules to form layers parallel to the ab plane. In addition, π–π stacking inter­actions are observed with a centroid–centroid distance of 3.721 (1) Å. The near planarity of the two isatin ring systems is illustrated by by the maximum deviations of 0.023 (1) and 0.025 (1) Å for the N atom in each case.
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