159 research outputs found

    The herbicide triflusulfuron-meth­yl

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    The mol­ecule of the title compound [systematic name: methyl 2-({[4-dimethyl­amino-6-(2,2,2-trifluoro­eth­oxy)-1,3,5-triazin-2-yl]carbamo­yl}sulfamo­yl)-3-methyl­benzoate], C17H19F3N6O6S, features a nearly planar (r.m.s. deviation = 0.098 Å) dimethyl­amino­triazinyl-urea group with a short intra­molecular N—H⋯N hydrogen bond to a triazine N atom. An intra­molecular dipole–dipole inter­action between the sulfamide and carboxyl­ate groups, with Os⋯Cc = 2.800 (1) Å and Ns⋯Oc = 2.835 (1) Å, controls the orientation of the methyl­benzoate group and the shape of the mol­ecule. The crystal structure is stabilized by inter­molecular N—H⋯N hydrogen bonding, C—H⋯X (X = N,O) inter­actions and arene π–π stacking

    A 1:1 co-crystal of the herbicide triflusulfuron-methyl and its degradation product triazine amine

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    The herbicide triflusulfuron-methyl (systematic name: methyl 2-{[4-dimethyl­amino-6-(2,2,2-trifluoro­eth­oxy)-1,3,5-triazin-2-yl]carbamoylsulfamo­yl}-3-methyl­benzoate) and its degradation product triazine amine [systematic name: 2-amino-4-dimethyl­amino-6-(2,2,2-trifluoro­eth­oxy)-1,3,5-triazine] form a triclinic 1:1 co-crystal of the title compound, C7H10F3N5O·C17H19F3N6O6S, in which its two components are connected via a pair of complementary N—H⋯N hydrogen bonds, similar to the monoclinic crystal structure of the parent compound triflusulfuron-methyl [Mereiter (2011 ▶). Acta Cryst. E67, o1778–o1779] in which a pair of mol­ecules related by a twofold axis are linked by two N—H⋯N bonds. The triflusulfuron-methyl mol­ecules of both crystal structures are similar in geometric parameters and conformation, which is due to stiffening by a short intra­molecular N—H⋯N bond [N⋯N = 2.620 (4) Å] and an intra­molecular dipole–dipole inter­action between the sulfamide and the carboxyl moieties, with Os⋯Cc = 2.802 (5) Å and Oc⋯Ns = 2.846 (4) Å. Inter­molecular N—H⋯O hydrogen bonds and slipped π–π stacking inter­actions between the diamino­triazine moieties [perpendicular distances of 3.25 Å within hydrogen-bonded tetra­mers and 3.27 Å between adjacent tetra­mers] link the two constituents of the co-crystal into columns parallel to the a axis. An intra­molecular C—H⋯O hydrogen bond occurs in the triflusulfuron-methyl mol­ecule and inter­molecular C—H⋯O inter­actions between triflusulfuron-methyl mol­ecules occur in the crystal structure. In the triflusulfuron-methyl molecule the dihedral angle between the least-squares planes of the two rings is 75.8 (1)°. In the triazine molecule, the CF3 group is partly orientationally disordered

    (η5-Cyclo­penta­dien­yl)(propionitrile-κN)bis­(triphenyl­phosphine-κP)ruthenium(II) trifluoro­methane­sulfonate

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    The title compound, [Ru(C5H5)(C3H5N)(C18H15P)2]CF3SO3, forms yellow crystals with a distinctly hemimorphic habit. It contains a half-sandwich complex of ruthenium with a three-legged piano-stool geometry, with Ru—P = 2.3585 (4) and 2.3312 (4) Å, and Ru—N = 2.0422 (15) Å as the legs. The CF3SO3 − anion is anchored in the crystal lattice by C—H⋯O and C—H⋯F hydrogen bonds, with C⋯F,O distances starting at 3.125 (2) Å

    Sodium selenite pentahydrate, Na 2

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    (3β,18β,20β)-N-Eth­oxy­carbonyl­methyl-3-nitrato-11-oxoolean-12-ene-29-carboxamide methanol monosolvate

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    The title compound, C34H52N2O7·CH4O, is the methanol solvate of a difunctionalized derivative of the therapeutic agent 18β-glycyrrhetinic acid, a penta­cyclic triterpene. The five six-membered rings of the glycyrrhetinic acid moiety show normal geometries, with four rings in chair conformations and the unsaturated ring in a half-chair conformation. This moiety is substituted by a nitrate ester group and an O-ethyl­glycine group. In the crystal, the nonsolvent mol­ecules are packed parallel to (010) in a herringbone fashion with the nitrato, ethyl­glycine and methanol-O atom being proximate. The methanol solvent mol­ecule is anchored via a donated O—H⋯Oac­yl and an accepted N—H⋯O hydrogen bond, giving rise to infinite zigzag chains of hydrogen bonds parallel to [100]. Two weak intermolecular C—H⋯O interactions to the methanol and to an acyl oxygen establish links along [100] and [010], respectively

    [1,1′-Diphenyl-3,3′-(propane-1,3-diyldinitrilo)dibut-1-enolato]copper(II)

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    The title compound, [Cu(C23H24N2O2)] or [Cu{(BA)2pn}], where (BA)2pn is 1,1′-diphenyl-3,3′-(propane-1,3-diyldinitrilo)dibut-1-enolate, is a mononuclear copper(II) complex, located on a twofold axis. The four-coordinate CuII atom is in a tetra­hedrally distorted square plane defined by the N and O atoms of the Schiff base ligand. In the tetra­dentate ligand, the two chelate rings are twisted relative to each other, making a dihedral angle of 36.57 (3)°

    (1R,2R)-1,2-Diphenyl-1,2-bis­(1H-tetra­zol-1-yl)ethane

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    The title compound, C16H14N8, is a new chiral ligand designed for applications in supra­molecular chemistry and Fe2+ spin-crossover complexes. The crystal structure shows a herring-bone arrangement of the mol­ecules, which are mutually linked via inter­molecular C—H⋯N inter­actions mainly donated by the alkyl and tetra­zole H atoms

    {2,2′-[3-Aza­pentane-1,5-diylbis(nitrilo­methyl­idyne)]dipyrrol-1-yl}(4-methyl­pyridine)cobalt(III) tetra­phenyl­borate

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    The title compound, [Co(C14H17N5)(C6H7N)](C24H20B) or [Co{(pyrrole)2dien}(4-Mepy)]BPh4 where (pyrrole)2dien is 2,2′-[(3-aza­pentane-1,5-diylbis(nitrilo­methyl­idyne)]dipyrrole and 4-Mepy is 4-methyl­pyridine, contains a penta­dentate (pyrrole)2dien ligand furnishing an N5 set, such that two of the pyrrole N atoms and two of the dien N atoms occupy the equatorial positions while one of the imine N atoms of the (pyrrole)2dien ligand occupies the axial position. The 4-methyl­pyridine ligand occupies an axial position trans to one of the imine N atoms of the penta­dentate ligand. In the observed conformation of the penta­dentate ligand, the pyrrole rings attain asymmetrical positions owing to the structural demands. The geometry of the resulting CoN6 coordination can be described as distorted octa­hedral

    (Butane-1,4-diyl)(trimethylphosphane-κP)[tris(3,5-dimethylpyrazol-1- yl-κN 2)hydroborato]iridium(III)

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    In the mononuclear title iridium(III) complex, [Ir(C4H8)- (C15H22BN6)(C3H9P)], which is based on the [tris(3,5- dimethylpyrazol-1-yl)hydroborato]iridium moiety, Ir[TpMe2], the IrIII atom is coordinated by a chelating butane-1,4-diyl fragment and a trimethylphosphane ligand in a modestly distorted octahedral coordination environment formed by three facial N, two C and one P atom. The iridium–butane-1,4- diyl ring has an envelope conformation. This ring is disordered because alternately the second or the third C atom of the butane-1,4-diyl fragment function as an envelope flap atom (the occupancy ratio is 1:1). In the crystal, molecules are organized into densely packed columns extending along [101]. Coherence between the molecules is essentially based on van der Waals interactionsFEDER CTQ2010–17476Consolider-Ingenio 2010 CSD2007–00006Junta de Andalucía FQM-119 P09-FQM-483
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