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.
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.File in questo prodotto:
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