UV-Vis and ESI MS/MS Study of Calix[4]arene Derivatives and Their Lanthanide Complexes

被引：5
|
作者：
Bakic, Marina Tranfic [1 ]
Soledad Espinosa, Mariela [2 ]
Cindro, Nikola [3 ]
Frkanec, Leo [4 ]
Alejandra Babay, Paola [2 ]
Galic, Nives [3 ]
机构：
[1] Univ Zagreb, Dept Chem & Biochem, Fac Food Technol & Biotechnol, Pierottijeva 6, Zagreb 10000, Croatia
[2] Natl Commiss Atom Energy, Dept Analyt Chem, Av Gral Paz 1499, Buenos Aires, DF, Argentina
[3] Univ Zagreb, Fac Sci, Dept Chem, Horvatovac 102a, Zagreb 10000, Croatia
[4] Rudjer Boskovic Inst, Dept Organ Chem & Biochem, Bijenicka C 54, HR-10000 Zagreb, Croatia
来源：
CROATICA CHEMICA ACTA | 2017年 / 90卷 / 04期
关键词：
calixarenes; lanthanides; electrospray mass spectrometry; UV-Vis spectroscopy; ALKALI-METAL CATIONS; LOWER-RIM; AMIDE DERIVATIVES; TERTIARY AMIDE; EXTRACTION; CALIXARENES; THERMODYNAMICS; DIGLYCOLAMIDE; RECOGNITION; BINDING;
D O I：
10.5562/cca3288
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Coordination properties of calix[4]arenes bearing substituents on the lower rim: tetraethyl ester (1), tetraethylamide (2), and newly synthesized tetraethylmethylamide derivative (3), towards selected lanthanide cations (La3+, Eu3+, Yb3+) were studied by spectrophotometric titrations. No complexation was observed with ester derivative, while amide derivatives formed 1:1 complexes and bound lanthanide cations very efficiently (lgK(La2) = 5.1; lgK(Eu2) >= 6; lgK(Yb2) >= 6; lgK(La3) >= 6; lgK(Eu3) >= 6; lgK(Yb3) >= 6). The ligands and complexes were also analysed by ESI MS and MS/MS spectrometry. Both inductive cleavage and proton rearrangement fragmentation reactions were observed. Corresponding fragmentation pathways were proposed. The results obtained by MS analysis were in accordance with those obtained by spectrophotometric titrations.
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收藏
页码：679 / 687
页数：9
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