Journal of Physical Chemistry p. 8195 - 8208 (1994)
Update date:2022-08-17
Topics:
Poeschl, M.
Hertz, H. G.
The proton magnetic relaxation times T1 and T2 of the four n-propanol species HOC3D7, DOCH2CD2CD3, DOCD2CH2CD3, and DOCD2CD2CH3 have been measured at the resonance frequency ν = 12 MHz as a function of the temperature in the range 80 < T/K < 330.T1 measurements were performed at a second frequency, ν = 48 MHz, as well.Further measurements of the same general kind were done on the mixtures n-propanol + 50 mol percent glycerol (glycerol-d5 and -d8) and n-propanol + 70 mol percent glycerol (glycerol-d5 and -d8).Isotopic dilution measurements with constant content of propanol and varying degree of deuteration were made to obtain the intramolecular relaxation rates.The proton NMR spectra of the four propanol species were recorded at T = 130 K.From all these data correlation times for the various proton-proton vectors were derived.It turned out that to each motion a slow and a fast mode contribution exists, however, the results are not compatible with the model of a molecule as a system of rigid bodies connected by axes about which rotation occurs.A formal description and interpretation is given involving the molecule concept without the presupposition of a microscopic rigid body.
View MoreNanjing HuiBaiShi Biotechnology Co.,Ltd.
Contact:+86 (25)58745219
Address:No.606 Ningliu Road,LiuHe District.
Contact:+86-025-52406782
Address:8 Taizishan Rd., Yanjiang Industrial Development Area, Nanjing, Jiangsu, China.
Shanghai birch chemical technology co.,ltd
Contact:+86-21-54096810
Address:No.2588,Jungong Road,Shanghai,China
Taimai Sanluck Pharmaceutical Co.,Ltd
Contact:86-592-7662921
Address:8D,No.186,Huarong Road,Huli,Xiamen,China
Shanghai Witshoot Internet Technology Co Ltd
Contact:+86-21-66390020
Address:Room 419, No.285 Luochuan Road (E)
Doi:10.1016/j.ejphar.2015.09.003
(2015)Doi:10.1055/s-2003-39292
(2003)Doi:10.1021/ja00266a023
(1986)Doi:10.1007/BF02176889
(1953)Doi:10.1021/jo062131+
(2007)Doi:10.1021/ic202121s
(2012)