Thermodynamics of host-guest interactions in lower rim functionalized calix[4] arenes and metal cations: The medium effect
Article Abstract:
The synthesis and structural characterization, determined by H1 and C13 NMR, for a new tetraester calix[4] arene derivative containing mixed pendant arm in its lower rim are reported. The medium effect on the binding process of tetraester calix[4]arene for metal cations are examined to establish the sites of interaction of the ligand with the metal cation, the composition of complex formed and the strength of ligand-cation interaction in different media.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2004
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Complexation of calixarene derivatives and lanthanide cations in nonaqueous media
Article Abstract:
An investigation on the complexing properties of two lower rim calix(4)arene derivatives, namely, 5, 11,17,23-tetrakis(1, 1-dimethylethyl)-25-27-bis[2-(methylthio)ethoxy]-26,28-bis[2-(diethylamine)ethoxy]calix(4)arene (1a) and p-tertbutycalix(4)arene tetradisopropylethanoamide (1b) toward lanthanide(III), scandium, and yttrium cations in acetonitrile and in N,N-dimethylformanide at 298.15 K is presented.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2001
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Barycenter of energy of lanthanide 4f(super N-1)5d configuration inorganic crystals
Article Abstract:
A semiempirical method for the evaluation of the barycenter of energy of 4f(super N-1)5d configuration is presented. A relationship is found between the barycenter of energy of the 4f(super N-1)5d configurations of Eu(super 2+) and Ce(super 3+) are calculated in various crystals.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2004
User Contributions:
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