Ein Phenyl-,,azo“-Derivat des Aeetessigsäureanilids mit zwei unterschiedlichen Konformeren im Kristallverband
Abstract
N-Phenyl-2-(2-methyl-phenylhydrazono)-3-oxobutyramide crystallizes in the monoclinic space group C2/c with 2 quite different molecules in the asymmetric unit. In one case the methylphenyl-group is twisted against the hydrazono-group by an angle of 1.7°, whereas in the other case this angle is 11.4°. The two NH-groups are involved in intramolecular hydrogen bonding with the two oxygens of the molecule. Like many other “azopigments” the molecule is the hydrazone tautomer, at least in the crystalline state.
In the crystal lattice the molecules lie in layers with distances between 3.27 and 3.44 Å. Above every molecule in the layer there is a column of other molecules. The surroundings of the two different molecules in the crystal are the same. Therefore, it has to be concluded, that their differences are not a consequence of crystal forces.
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Articles in the same Issue
- KLiO:Ein Oxid mit dreifach koordiniertem Lithium
- The crystal structure of aceto-acetanilide azo-pigments VI. C.I. Pigment Yellow 4, α-(1-hydroxyethylidene) acetanilide-α-azo-(4′-nitrobenzene)
- The crystal structure of aceto-acetanilide azo-pigments VII. A polymorph (α) of C.I. Pigment Yellow 5, α-(1-hydroxyethylidene) acetanilide-α-azo-(2′-nitrobenzene)
- The Cu2Sb and related structures
- The modulated structure of niobium tetratelluride NbTe4
- Enumeration of 4-connected 3-dimensional nets and classification of framework silicates. 3D nets based on the 4.6.12 and (4.6.10)4 (6.6.10): 2D nets
- Dehydration and phase transformation in sepiolite
- Elektrostatische Berechnungen an Karbonaten mit aplanaren Karbonatgruppen
- Ein Phenyl-,,azo“-Derivat des Aeetessigsäureanilids mit zwei unterschiedlichen Konformeren im Kristallverband
- Structure and C–Cl bond in 1-Cl-3-NO2C6H4
- Crystal data on Zn3Rb2(P2O7)2 and Co3Rb2(P2O7)2
- The crystal structure of L(+)-glutamic acid hydroiodide, l-C5H9NO4 · HI
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- A neutron diffraction study of the bonding of zeolitic water in scolecite at 20 K *
- Structure refinement of Gysinite La0.16Nd1.18Pb0.66(CO3)2(OH)1.34 · 0.66 H2O
