Nuclear magnetic resonance spectra of aryl nitrogen derivatives of some estratriens

Chou, Tsung-Chu; Lin, Hsi Hu

doi:10.1021/je60032a034

J. Chem. Eng. Data

1967

DOI: 10.1021/je60032a034

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Nuclear magnetic resonance spectra of aryl nitrogen derivatives of some estratriens

Tsung-Chu Chou¹,

Hsi Hu Lin²

Abstract: The nuclear magnetic resonance chemical shifts and coupling constants are reported for seven aryl nitrogen derivatives of estratriens. This study confirmed the position of the group on the aromatic ring.

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2002

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Interfacial Tension of Chlorinated Aliphatic DNAPL Mixtures as a Function of Organic Phase Composition

Seo

McCray

2002

Environ. Sci. Technol.

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This research evaluates the ability of three models to predict the organic liquid-water interfacial tension (IFT) of chlorinated aliphatic hydrocarbon mixtures that are dense nonaqueous-phase liquids (DNAPLs). Prediction of the IFT is relevantto quantify processes such as DNAPL trapping in soil pores and kinetic interphase mass transfer. Three models are evaluated: the Fu et al. method (FU) [Fu, J.; Buqiang, L.; Zihao, W. Chem. Eng. Sci. 1986,41 (10), 2673-2679]; a modified version of the Apostoluk and Szymanowski method (AS) [Apostoluk, W.; Szymanowski, J. Solvent Extr. Ion Exch. 1996, 14 (4), 635-651], and a simple linear ideal mixing theory (LIMT). The FU and AS methods require knowledge of NAPL-phase mole fractions and mutual solubilities. The LIMT method requires the pure organic liquid IFT and DNAPL-phase mole fraction as model input. Forty chlorinated DNAPL mixtures were used. The mixtures include two-, three-, and four-component DNAPL mixtures of tetrachloroethylene, trichloroethylene, 1,2-cis-dichloroethylene, 1,2-trans-dichloroethylene, and carbon tetrachloride. Measured IFTvaries nearlylinearlywith DNAPL-phase mole fraction for the all the DNAPL mixtures except those that include 1,2-DCE. The FU and LIMT models generally provided acceptable results for all mixtures. The FU model yielded an average relative error in the predicted IFT of 6.4%, while the LIMT model exhibited an average error of 9.3%. The AS method exhibited an average error of 16.4%.

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Interfacial Tension of Chlorinated Aliphatic DNAPL Mixtures as a Function of Organic Phase Composition

Seo

McCray

2002

Environ. Sci. Technol.

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Nuclear magnetic resonance spectra of aryl nitrogen derivatives of some estratriens

Abstract: The nuclear magnetic resonance chemical shifts and coupling constants are reported for seven aryl nitrogen derivatives of estratriens. This study confirmed the position of the group on the aromatic ring.

Cited by 1 publication

References 5 publications

Interfacial Tension of Chlorinated Aliphatic DNAPL Mixtures as a Function of Organic Phase Composition

Interfacial Tension of Chlorinated Aliphatic DNAPL Mixtures as a Function of Organic Phase Composition

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