6533b870fe1ef96bd12d0671

RESEARCH PRODUCT

trans-4-Bromo-ONN-azoxybenzene at 100 K.

Janusz B. KyziołKrzysztof EjsmontJacek ZaleskiAndrzej A. Domański

subject

DiffractionAzoxyCrystal structureIsomersTorsion (mechanics)X ray diffraction analysisGeneral MedicineCrystal structureMolecular dynamicsGeneral Biochemistry Genetics and Molecular BiologyBond lengthCrystalchemistry.chemical_compoundCrystallographyTorsional stressMolecular geometrychemistrySubstitution reactionsOxidationMolecule

description

The crystal structure of the alpha isomer of trans-4-bromoazoxybenzene [systematic name: trans-1-(bromophenyl)-2-phenyldiazene 2-oxide], C(12)H(9)BrN(2)O, has been determined by X-ray diffraction. The geometries of the two molecules in the asymmetric unit are slightly different and are within approximately 0.02 A for bond lengths, approximately 2 degrees for angles and approximately 3 degrees for torsion angles. The azoxy bridges in both molecules have the typical geometry observed for trans-azoxybenzenes. The crystal network contains two types of planar molecules arranged in columns. The torsion angles along the Ar-N bonds are only 7 (2) degrees, on either side of the azoxy group.

10.1107/s0108270104007103https://pubmed.ncbi.nlm.nih.gov/15131395