The crystal structure of C. I. Pigment Red 3, 4-methyl-2-nitrophenylazo-2-naphthol
Abstract
The crystal and molecular structure of C. I. Pigment Red 3, 4-methyl-2-nitrophenylazo-2-naphthol has been determined by x-ray diffraction techniques. It crystallises in the monoclinic system with cell parameters a = 16.316 ± 0.038 Å, b = 12.860 ± 0.033 Å, c = 6.960 ± 0.018 Å, β = 102.00 ± 0.05°. The space group is P21/a and there are four molecules per unit cell. The structure was solved using direct methods and least-squares refinement has been completed on three-dimensional data, 1601 reflections (CuKα radiation). The hydrogen atoms have been found and included but not refined. The final residual is 7.8%. The molecule exists as the hydrazone tautomer and intramolecular hydrogen bonds keep the molecules approximately planar; the slight deviations from planarity are explained by packing considerations. The molecules are packed in columns with alternate molecules antiparallel and are linked by van der Waals forces.
Articles in the same Issue
- P.P. Ewald 90 Jahre
- A topographic contribution to the illustration of dynamical wave fields
- Oriented transformation of malachite into tenorite
- Complexes for crystallographic point groups, rod groups and layer groups
- How many faces has the largest space-filling polyhedron?
- The intermediate plagioclase feldspars: an example of a structural resonance
- Darstellung und kristallographische Daten von Orthoboraten (SE)2Ca3[BO3]4
- Die Kristallstruktur eines Kalium-Strontium-Azidhydrates K2,24Sr1,34(N3)4,92(H2O)6,l6
- Bestimmung der Kristallstruktur von 6-methyl-2-oxo-1,2-diphenyl-3-oxa-2-phosphabicyclo[3,l,0]hexan (C17H17O2P)
- The crystal structure of C. I. Pigment Red 3, 4-methyl-2-nitrophenylazo-2-naphthol
- Accurate determination of cell dimensions of the triclinic crystal para nitro-phenoxy acetic acid
- Crystal structure of synthetic LiScSiO4 olivine and comparison with isotypic Mg2SiO4
- Ktenasite, another mineral with ∞2[(Cu,Zn)2(OH)3O]− octahedral sheets
- An empirical correction term for the calculation of site-potentials with the Madelung method
- Vorläufige Mitteilungen — Preliminary notices The crystal and molecular structure of B18C4H22
- Crystallographic data for the mesogenic substances p-(p-ethoxyphenylazo)phenyl heptanoate and undecylenate
- Crystal data on 4-(2′-hydroxythiobenzoyl) morpholine
- Crystal data for charge transfer complex of tetrachlorophthalic anhydride and hexamethylobenzene
- Space group and unit cell dimensions of tris complex of bis(di(p-tolyl)dithiophosphinato)nickel(II) with 1,3-diaminopropane
- Crystal data of tri-sodium hydrogen sulphate
- Unit cell dimensions uranyl acetate complexes, M[(UO2)2(AcO)6] · xH2O
Articles in the same Issue
- P.P. Ewald 90 Jahre
- A topographic contribution to the illustration of dynamical wave fields
- Oriented transformation of malachite into tenorite
- Complexes for crystallographic point groups, rod groups and layer groups
- How many faces has the largest space-filling polyhedron?
- The intermediate plagioclase feldspars: an example of a structural resonance
- Darstellung und kristallographische Daten von Orthoboraten (SE)2Ca3[BO3]4
- Die Kristallstruktur eines Kalium-Strontium-Azidhydrates K2,24Sr1,34(N3)4,92(H2O)6,l6
- Bestimmung der Kristallstruktur von 6-methyl-2-oxo-1,2-diphenyl-3-oxa-2-phosphabicyclo[3,l,0]hexan (C17H17O2P)
- The crystal structure of C. I. Pigment Red 3, 4-methyl-2-nitrophenylazo-2-naphthol
- Accurate determination of cell dimensions of the triclinic crystal para nitro-phenoxy acetic acid
- Crystal structure of synthetic LiScSiO4 olivine and comparison with isotypic Mg2SiO4
- Ktenasite, another mineral with ∞2[(Cu,Zn)2(OH)3O]− octahedral sheets
- An empirical correction term for the calculation of site-potentials with the Madelung method
- Vorläufige Mitteilungen — Preliminary notices The crystal and molecular structure of B18C4H22
- Crystallographic data for the mesogenic substances p-(p-ethoxyphenylazo)phenyl heptanoate and undecylenate
- Crystal data on 4-(2′-hydroxythiobenzoyl) morpholine
- Crystal data for charge transfer complex of tetrachlorophthalic anhydride and hexamethylobenzene
- Space group and unit cell dimensions of tris complex of bis(di(p-tolyl)dithiophosphinato)nickel(II) with 1,3-diaminopropane
- Crystal data of tri-sodium hydrogen sulphate
- Unit cell dimensions uranyl acetate complexes, M[(UO2)2(AcO)6] · xH2O
