Two electronic transitions in the near-UV region of six isomeric difluorobenzonitriles—I

Add time:07/11/2019    Source:sciencedirect.com

A new technique—photoacoustic spectroscope (PAS)—is applied to the study of the electronic transitions in the six isomers 3,5-; 2,4-; 2,5-; 3,4-; 2,3-; and 2,6-difluorobenzonitriles. The PAS spectra are compared with solution spectra recorded. The two π-π* transitions analogous to the benzene strong 200 nm, and weak and forbidden 260 nm transitions could be identified in these molecules. An interesting observation is that the origins of the electronic transitions in these molecules are in fairly good agreement with the additive rule which is routed through different starting points and also a prediction of the origin of meta fluorobenzonitrile at 37,536.1 cm−1 from the data of 3,4- and 2,5-difluorobenzonitriles.The fluorescence spectrum for all six isomers is reported here for the first time.

We also recommend Trading Suppliers and Manufacturers of 2,4-DIFLUOROBENZONITRILE (cas 103496-86-2). Pls Click Website Link as below: cas 103496-86-2 suppliers

Prev:The central effects of alpha-melanocyte stimulating hormone (α-MSH) in chicks involve changes in gene expression of neuropeptide Y and other factors in distinct hypothalamic nuclei
Next:Regioselective alkylation reaction of the 2′-deoxyctidine with 9-aminomethyl derivatives of SN38)