Investigation on the intermolecular interaction between diethyl ether and dichloromethane in gaseous phase by using the DAOSD approach

Intermolecular interaction between diethyl ether and dichloromethane was investigated by using double asynchronous orthogonal sample design (DAOSD) scheme. FT-IR spectra of the two compounds were measured in the gas phase. A gas cell that satisfied the requirement of the DAOSD approach was designed, fabricated and utilized. The appearance of cross peaks in a pair of asynchronous spectra demonstrated that intermolecular interaction occurred between two compounds. Interference from the spectra of solvent can be avoided by measuring the samples in gas phase, thereby extending the application range of DAOSD and relevant approaches.