New crystal data for azoxybenzene

trans-Diphenyldiazene oxide

“…The vibrational spectra of the title molecule have been analyzed (Gruger & Le Calvé, 1972). Preliminary X-ray data were reported by Herrington & Bernard (1966) and the molecular structure in the gas-phase was established on the basis of gas-phase electron diffraction studies combined with ab initio calculations (Tsuji et al, 2000). Two coordination complexes including the title molecule have been structurally characterized (Bassi & Scordamaglia, 1975;Cambie et al, 1996).…”

“…IR and Raman spectroscopy (Gruger & Le Calvé, 1972), or gas electron diffraction combined with ab initio calculations (Tsuji et al, 2000). However, the X-ray structure has not been determined so far, probably because of the low melting point of this compound, 305-309 K. A preliminary study about space group determination, P2 1 /a was done by Herrington & Bernard (1966). This reference is however not quoted in the CSD (Version 5.28, updated May 2007).…”