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- W2032298071 abstract "Abstract Three new Sc3+–calix[n]arene (n=4,6,8) complexes (1) [Sc(p-tert-butylcalix[4]arene-3H)2(DMF)x](2−x)DMF·ClO4, (2) [Sc(p-tert-butylcalix[6]arene-4H)(DMF)x](3−x)DMF·ClO4 and (3) [Sc(p-tert-butylcalix[8]aren-7H)(DMF)6]·(ClO4)2 were synthesized in a DMF solution of Sc(ClO4)3. The properties and coordination characteristics of the three calixarene compounds were determined by elemental analyses, TG-DTA, electric conductance measurements, UV, FT-IR and 1H-NMR spectroscopy. According to FT-IR analysis, in the three complexes the scandium ion is coordinated by oxygen donor atoms from calixarene ligands and DMF molecules. The complexes behave as 1:1 and 1:2 electrolytes in the case of calix[n]arene (n=4,6) and calix[8]arene, respectively, and the limiting molar conductances of 1, 2 and 3 are 105.9, 32.3 and 74.5 S cm2 mol−1, respectively. 1H-NMR studies demonstrate that 2 is more stable than 1 and 3 in CDCl3, and are indicative of partial cone conformation of the calix[6]arene ligand." @default.
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- W2032298071 date "1998-07-01" @default.
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- W2032298071 title "Synthesis and characterization of scandium(III) complexes with p-tert-butylcalix[n]arenes (n=4,6,8)" @default.
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- W2032298071 doi "https://doi.org/10.1016/s0925-8388(98)00475-7" @default.
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