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In the title compound, C16H15F3N2O4, the relative stereochemistry of the four stereogenic C atoms has been determined. The carboxymethyl and 2-(trifluoromethyl)phenyl substituents of the pyrrolidine cycle have a cis mutual arrangement. The five-membered saturated azacycle adopts an envelope conformation with the N atom occupying the flap position. In the crystal, adjacent molecules are combined in centrosymmetric dimers by two weak N—H
O hydrogen bonds.
O hydrogen bonds.organic compoundsOpen access
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The title compound, C13H8F3N3S, consists of three linked aromatic rings. The whole molecule (except for the three F atoms) is planar to within 0.225 (2) Å. In the crystal, adjacent molecules are linked into chains along the ac diagonal by weak C—HN interactions.
N interactions.metal-organic compoundsOpen access
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In the title compound, [Ti2(C16H14N2O2)2O2]·2CHCl3, the TiIV atom in the centrosymmetric complex has a distorted octahedral N2O4 coordination environment and is linked via two μ2-oxido bridges into a dinuclear centrosymmetric complex, with a TiTi separation of 2.7794 (8) Å. In the salen (N,N′-ethylenebis(salicylimine)) ligand, the two salicylimine units make a dihedral angle of 45.31 (5)°. The complex molecules are stacked parallel to [100], forming channels in which the solvent chloroform molecules are located. C—HO hydrogen-bonding interactions between the complex molecules and the solvent molecules consolidate the crystal packing.
Ti separation of 2.7794 (8) Å. In the salen (N,N′-ethylenebis(salicylimine)) ligand, the two salicylimine units make a dihedral angle of 45.31 (5)°. The complex molecules are stacked parallel to [100], forming channels in which the solvent chloroform molecules are located. C—HO hydrogen-bonding interactions between the complex molecules and the solvent molecules consolidate the crystal packing.metal-organic compoundsOpen access
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In the title compound, [Al(C16H14N2O2)(C3H7O)]·0.5CH2Cl2, the salen complex is monomeric and the dichlormethane solvent molecule lies on a crystallographic twofold axis. The central Al atom is fivefold coordinated and possesses a square-based pyramidal environment. The Al—OAlk(ipropyl) bond [1.7404 (14) Å] is much shorter than the Al—OAr(salen) bond lengths [1.7974 (15) and 1.8094 (14) Å]. The isopropyloxo group forms an intramolecular C—HN hydrogen bond. In the crystal, the complex molecules are linked by weak C—HO interactions.
N hydrogen bond. In the crystal, the complex molecules are linked by weak C—HO interactions.metal-organic compoundsOpen access
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In the title structure, [Ti2(C16H16N2O2)2O2]·2CHCl3, the Ti atom is coordinated in a distorted octahedral geometry by the O,N,N′,O′ donor set of the salalen ligand and by two μ2-oxide O atoms, which bridge two Ti(salalen) fragments into a centrosymmetric dimeric unit. In the central Ti2(μ2-O)2 fragment, the metal–oxygen distances are significantly different [1.7962 (19) and 1.9292 (19) Å]. In the crystal, the chloroform molecule is anchored via an N—HCl and a bifurcated C—H(O,O) hydrogen bond. Slipped π–π stacking [shortest CC distance = 3.585 (4) Å] and C—Hπ interactions contribute to the coherence of the structure.
Cl and a bifurcated C—H(O,O) hydrogen bond. Slipped π–π stacking [shortest CC distance = 3.585 (4) Å] and C—Hπ interactions contribute to the coherence of the structure.
