Results 151 to 160 of about 19,652 (193)

Slow Solvation Dynamics of a Water–Nitrobenzene System

Accounts of Chemical Research, 2007
Very slow changes in solvation taking place in water-saturated nitrobenzene have been observed and studied by nuclear magnetic resonance (NMR), Fourier transform infrared, and inelastic neutron scattering spectroscopy. These changes are most likely caused by the rearrangement of the hydrogen-bonded water network.
Greg, Moakes, Jiri, Janata
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Applications of the dicarbollylcobaltate(III) anion in the water/nitrobenzene extraction system

Talanta, 1985
The fundamental properties of the polyhedral sandwich dicarbollylcobaltate(III) anion {[pi-(3)-1,2-B(9)C(2)H(11)](2)Co(III)}(-) are given, together with results for extraction of alkali-metal, alkaline-earth metal and some other cations (e.g., H(+), Pb(2+), Pd(2+) and Ce(3+)) into nitrobenzene and corresponding analytical applications.
E, Makrlík, P, Va Nura
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Charge transfer across the water/nitrobenzene interface by three-electrode system

Science in China Series B Chemistry, 2002
A droplet of aqueous solution containing a certain molar ratio of redox couple is first attached onto a platinum electrode surface, then the resulting drop electrode is immersed into the organic solution containing very hydrophobic electrolyte. Combined with reference and counter electrodes, a classical three-electrode system has been constructed.
Yi Yuan, Zhao Gao, Meiqin Zhang, Zhiquan Zhang, Yuanhua Shao   +4 more
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Extraction separation of strontium from calcium in the water-nitrobenzene system

Journal of Radioanalytical and Nuclear Chemistry Letters, 1985
A rapid extraction separation of Sr2+ from Ca2+ with the nitrobenzene solution of sodium dicarbollylcobaltate /NaDCC/ in the presence of polyethylene glycol having mean relative molecular weight 400 /PEG 400/ and tetrasodium salt of ethylenediamine-N,N,N′,N′-tetraacetic acid /Na4L/ was developed. The separation factor αSr/Ca was approximately 104.
E. Makrlík, P. Vaňura
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Individual extraction constants of some dicarbollylcobaltate anions in the water-nitrobenzene system

Journal of Radioanalytical and Nuclear Chemistry Articles, 1995
Individual extraction constants of nine dicarbollylcobaltate anions in the two-phase water-nitrobenzene system were determined radiometrically assuming that the changes of Gibbs energy of the transfer of the tetraphenylarsonium cation, Ph4As+, and of the tetraphenylborate anion, BPh 4 − , from the aqueous into the nitrobenzene phase are equal.
E. Makrlík, J. Rais, K. Baše, J. Plešek, P. Vaňura   +4 more
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Experimental study of Volta potentials in water/nitrobenzene systems with anion adsorption

Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, 1986
Abstract The Volta potential of the water/nitrobenzene interface has been measured in the presence of tetraethylammonium picrate and sodium tetraphenylborate. The effect of the latter salt on the changes in surface potential and surface tension of both water and nitrobenzene-saturated water was also studied.
Irwina Zagórska, Zbigniew Koczorowski
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Investigations on volta potentials in water-nitrobenzene systems and on surface potentials of these solvents

Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, 1983
Abstract The dynamic condenser method has been used for determination of Volta potentials in water-nitrobenzene partition systems, δ nw wn ψ (MX), as well as determining the difference between surface potentials Δ nw wn χ of both solvents. Values of Δ nw wn ψ o for several electrolytes have been measured and mutual consistency of these date ...
Zbigniew Koczorowski, Irwina Zagórska
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Extraction of Microamounts of Yttrium from Strontium in a Water-Nitrobenzene System

Journal of Radioanalytical and Nuclear Chemistry, 2001
A rapid extraction separation of trace amounts of yttrium from strontium with a nitrobenzene solution of sodium dicarbollylcobaltate (NaDCC) in the presence of polyethylene glycol having mean relative molecular weight 400 (PEG 400) and tetrasodium salt of ethylenediamine-N,N,N′,N′-tetraacetic acid (Na4L) in the aqueous phase was developed.
E. Makrlík, P. Vanura
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Extraction separation of barium from strontium in a two-phase water-nitrobenzene system

Journal of Radioanalytical and Nuclear Chemistry Letters, 1985
A rapid extraction separation of Ba2+ from Sr2+ with a nitrobenzene solution of sodium dicarbollylcobaltate /NaDCC/ in the presence of polyethylene glycol having mean relative molecular weight 400 /PEG 400/ and tetrasodium salt of trans-cyclohexane-1,2-diamine-N,N,N′,N′-tetraacetic acid /Na4L/ was developed.
E. Makrlík, P. Vaňura
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Individual extraction constants of some organic cations in the two-phase water–nitrobenzene system

Journal of Radioanalytical and Nuclear Chemistry, 2010
From extraction experiments and c-activity measurements, the exchange extraction constants corre- sponding to the general equilibrium C ? (aq) ? Cs ? (nb) , C ? (nb) ? Cs ? (aq) taking part in the two-phase water- nitrobenzene system (C ? = organic cation; aq = aqueous phase, nb = nitrobenzene phase) were evaluated.
E. Makrlík, P. Selucký, P. Vaňura, J. Budka   +3 more
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