Structure of the trans-dimer of 2,6-di-isopropylnitrosobenzene

Abstract

The crystal structure of the trans-dimer of 2,6-di-isopropylnitrosobenzene has been established by X-ray diffraction studies. The crystals are monoclinic, space group P2₁/n, with Z= 2 and unit-cell constants a= 8.585 4(10), b= 10.949 7(11), c= 12.113 5(14)Å, and β= 94.27(1)°. The N–O and C–N bond distances are normal for aromatic dimeric nitroso compounds but the N–N distance is significantly longer than in most trans-dimers due to unavoidable intramolecular steric interactions between isopropyl groups in opposite halves of the dimer.