The rotational spectra of three isotopologues of the isopropanol-dimethyl ether molecular complex have been measured with pulsed jet Fourier transform microwave spectroscopy. In the complex, isopropanol acts as a proton donor and takes a gauche conformation. The H-D isotopic substitution of the hydroxylic hydrogen participating in the O-H3 3 3O hydrogen bond produces an increase of the B and C rotational constants, according to the shrinkage of the O3 3 3O distance of about 7 mÅ, underlying and sizing the associated Ubbelohde effect.
L.Evangelisti, F.Pesci, W.Caminati (2011). Adducts of Alcohols with Ethers: The Rotational Spectrum of Isopropanol−Dimethyl Ether. JOURNAL OF PHYSICAL CHEMISTRY. A, MOLECULES, SPECTROSCOPY, KINETICS, ENVIRONMENT, & GENERAL THEORY, 115, 9510-9513 [10.1021/jp112226b].
Adducts of Alcohols with Ethers: The Rotational Spectrum of Isopropanol−Dimethyl Ether
EVANGELISTI, LUCA;CAMINATI, WALTHER
2011
Abstract
The rotational spectra of three isotopologues of the isopropanol-dimethyl ether molecular complex have been measured with pulsed jet Fourier transform microwave spectroscopy. In the complex, isopropanol acts as a proton donor and takes a gauche conformation. The H-D isotopic substitution of the hydroxylic hydrogen participating in the O-H3 3 3O hydrogen bond produces an increase of the B and C rotational constants, according to the shrinkage of the O3 3 3O distance of about 7 mÅ, underlying and sizing the associated Ubbelohde effect.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
