On March 19, 2020, Bergmann, Katrina; van Wijngaarden, Jennifer published an article.HPLC of Formula: 321-28-8 The title of the article was Rotational Spectroscopic and Ab Initio Investigation of the Rotamer Geometries of 2-Fluoroanisole and 3-Fluoroanisole. And the article contained the following:
The rotational spectra of 2-fluoroanisole and 3-fluoroanisole were investigated using Fourier transform microwave spectroscopy in the 4-26 GHz range. Assigned transitions correspond to the lowest energy rotamer for 2-fluoroanisole which has the O-CH3 group directed away (anti) from the fluorine substituent whereas for 3-fluoroanisole, the spectrum is consistent with the presence of two rotamers arising from syn and anti orientations of the methoxy moiety relative to fluorine. Ab initio calculations at the MP2/cc-pVTZ level were used to estimate the equilibrium (re) geometries of the three observed rotamers. Their assignments were confirmed through the observation of the rotational transitions of eight minor isotopologues (13C and 18O) in natural abundance for each species. The mass dependence (rm(1)) structures derived using the exptl. determined rotational constants compare favorably with the ab initio estimates The resulting sets of geometric parameters suggest that the aromatic ring backbone is distorted by the introduction of the angular methoxy substituent, with a tendency to induce bond length alternation around the ring, and by the electron withdrawing effects of fluorine. The experimental process involved the reaction of 1-Fluoro-2-methoxybenzene(cas: 321-28-8).HPLC of Formula: 321-28-8
The Article related to fluoroanisole regioisomer rotational spectrum mol geometry, Physical Organic Chemistry: Absorption, Emission, Reflection, and Scattering Spectra (Ultraviolet and Visible, Infrared and Fourier Transform Infrared, Raman, Microwave, Photoelectron, Fluorescence, Phosphorescence, etc.) and other aspects.HPLC of Formula: 321-28-8
Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem