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.
引用
收藏
页码：679 / 687
页数：9
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