نتایج جستجو برای: crown ether addition

تعداد نتایج: 750363  

Journal: :Nanoscale 2015

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Journal: :Analytical Sciences 1993

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Journal: :The Journal of chemical physics 2012
Paola Hurtado Francisco Gámez Said Hamad Bruno Martínez-Haya Jeffrey D Steill Jos Oomens

The elucidation of the structural requirements for molecular recognition by the crown ether (18-crown-6)-2,3,11,12-tetracarboxylic acid (18c6H(4)) and its cationic complexes constitutes a topic of current fundamental and practical interest in catalysis and analytical sciences. The flexibility of the central ether ring and its four carboxyl side arms poses important challenges to experimental an...

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Journal: :Acta Chemica Scandinavica 1982

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Journal: :Polyhedron 2018

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Journal: :BUNSEKI KAGAKU 1983

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Journal: :Inorganics 2017

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Journal: :Inorganic Chemistry 2018

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Journal: :Macromolecular Chemistry and Physics 2022

Abstract In‐depth understanding of copolymerization kinetics and the resulting polymer microstructure is crucial for design materials with well‐defined properties. Further, insights regarding impact solvents on allows precisely tuned materials. In this regard, in situ 1 H NMR spectroscopy enables precise monitoring living anionic ring‐opening (AROP) ethylene oxide (EO) glycidyl ethers allyl eth...

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Journal: :Journal of the American Chemical Society 2021

The crown-ether coordination compounds ZnX2(18-crown-6), EuX2(18-crown-6) (X: Cl, Br, I), MnI2(18-crown-6), Mn3Cl6(18-crown-6)2, Mn3I6(18-crown-6)2, and Mn2I4(18-crown-6) are obtained by ionic-liquid-based synthesis. Whereas MX2(18-crown-6) (M: Zn, Eu) show conventional structural motives, exhibit unusual single MnX4 tetrahedra coordinated to the complex. Surprisingly, some outstanding photolum...

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