1,2-ヂクロルエタン溶液の赤外線吸收

概要

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Infrared spectra of dichloroethane in various solvents were obtained with a Baird Infrared Spectrophotometer. Following conclusions were derived : 1. The positions of absorption bands of dichloroethane in benzene solution are not different from those in CCl_4, CS_2, and CH_3CN solutions. Therefore, the complex compound is not formed between the molecules of dichloroethane and benzene. 2. Assuming the energy difference between the trans and gauche forms of dichloroethane in the liquid state, the energy difference between the two forms in various solvents was determined from the intensity ratio of 1284 and 1230 cm^<-1>, or 1430 and 1451 cm^<-1>. 3. Mixed ratio between the two forms in the non-polar solvents does not change with the concentration of dichloroethane. This conclusion is contrary to the association theory presented by Bishui. 4. Infrared band at 1312 cm^<-1> should be assigned to gauche form. (Received July 19, 1952)
宇宙航空研究開発機構の論文
1952-08-20