Results 231 to 240 of about 91,721 (252)

Fluorescence study of ion pair interactions on hydrocarbon bonded surfaces

Analytical Chemistry, 1985
Utilisation du sel d'ammonium de l'acide aniline-8 naphtalenesulfonique pour etudier les interactions de paires d'ions avec des surfaces Lichrosorb a alkylsilanes, en chromatographie liquide ...
Sally D. Dowling, W. Rudolf. Seitz
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Spectroscopic studies of the ion-pair interactions of antimony(III)

Spectrochimica Acta Part A: Molecular Spectroscopy, 1981
Abstract Various types of ion-pairs of different systems involving tetra-n-butylammonium iodide (D) with antimony trichloride (A) in dilute solutions in acetonitrile, methylene chloride and chloroform have been investigated spectrophotometrically in the region 550—25O mn.
Abdel-Ghany El-Kourashy, Abdel-Hamid Shalaby, Abolgasem Smida   +2 more
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ChemInform Abstract: Ion Pair Receptor Based on Anion—π Interaction.

ChemInform, 2011
AbstractNovel azacrown (VI) is synthesized via a one‐pot reaction between triazine (I) and benzaldehyde (II), followed by condensation with diamine (IV) and reduction of the intermediate bisimine.
Yin Chen, De‐Xian Wang, Zhi‐Tang Huang, Mei‐Xiang Wang   +3 more
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Theory of ion pairs coupled by exchange interaction

Journal of Physics and Chemistry of Solids, 1966
Abstract The theory of the properties and magnetic behaviour of a system of two coupled spins is given. The coupling is of the most general linear exchange type, including asymmetric and anisotropic contributions. The system shows many properties of a weak ferromagnet when the interaction is predominantly antiferromagnetic.
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Exchange Interaction of Mn+2 Ion Pairs in CsCdCl3

1979
The interaction in the pairs of Mn+2 ions in CsCdCl was investigated. Values of exchange constants for nearest and next to the nearest neighbours were found, the character of interaction was determined.Dipole-dipole constants and crystalline field parameters were found also.
G. A. Petrakovskii, E. A. Petrakovskaya, V. V. Velichko, S. N. Lukin   +3 more
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Energy Levels of Strongly Interacting Ion Pairs

1978
The basic interactions for ion pairs are reviewed and summarized. The most important coupling mechanisms for two electron — two center and for N — electron two-center systems are treated first. In particular, a detailed study of the direct exchange will be used to define and discuss the general form of the exchange hamiltonian and to define the ...
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Modified Ion Pair Interaction for Water Dimers on Supported MgO Ultrathin Films

The Journal of Physical Chemistry C, 2012
The dissociation of water dimers at the MgO(100) surface and MgO ultrathin films on Ag(100) has been studied by means of pure DFT and hybrid functional calculations. We demonstrate that at the intermediate regime between the isolated molecule and the water monolayer, barrierless dissociation of water occurs when assisted by another water molecule.
Livia GIORDANO, FERRARI, Anna Maria
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Ion-Pairing Interactions between 99MTc-Based Myocardial Imaging Agents and Oleic Acid

Pharmaceutical Research, 1996
The purpose was to test the hypothesis that ion-paired facilitated transport is of importance in successful myocardial uptake of cationic imaging complexes. In vitro ion-pairing interactions between oleic acid and seven cationic technetium-99m complexes based on the ligands 1,2-bis[bis(2-ethoxyethyl) phosphino ethane] (tetrofosmin), 1,2-bis(dimethyl ...
C M, Heard, J, Hadgraft
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Optical studies of Rare Earth ion pairs: interaction and energy transfer

International Conference on Luminescence - 1984, 1984
Rare earth ion pairs in isolators produce satellites for all optical transitions as a result of both the crystal field change induced at the site of each ion by its neighbour and the interaction between the two ions. The very narrow lines of diluted crystals make possible the selective excitation of these pairs and thus the direct study of the ...
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Optical Expressions of Ion-Pair Interactions in Minerals

1985
Clusters of transition element cations in neighboring sites frequently govern the optical properties of minerals. This is particularly true of Fe-bearing minerals which may exhibit several types of ion-pair transitions. In this thesis four different types of interactions were distinguished: intensified spin-forbidden transitions of Fe3+ clusters ...
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