Halide Size-Selective Binding by Cucurbit[5]uril–Alkali Cation Complexes in the Gas Phase

2021 ◽  
Author(s):  
Tina Heravi ◽  
Jiewen Shen ◽  
Spencer Johnson ◽  
Matthew C. Asplund ◽  
David V. Dearden
Keyword(s):  
Gas Phase ◽  
Alkali Cation ◽  
Selective Binding ◽  
Cation Complexes

scholarly journals Biomolecule structure characterization in the gas phase using mass spectrometry

2002 ◽  
Vol 16 (2) ◽  
pp. 71-79 ◽  
Author(s):  
Brian Bothner ◽  
Laurie Carmitchel ◽  
Kristin Staniszewski ◽  
Martin Sonderegger ◽  
Gary Siuzdak
Keyword(s):  
Mass Spectrometry ◽  
Gas Phase ◽  
Cation Binding ◽  
Structure Characterization ◽  
Alkali Cation ◽  
Desorption Ionization ◽  
Fab Mass Spectrometry ◽  
Deuterated Analog ◽  
Bidentate Complex ◽  
Cation Complexes

Carbohydrate/cation interactions were examined in the gas phase using mass spectrometry and the results were compared with computer generated models of the complexes. Monosaccharide/alkali cation complexes of five carbohydrates, D-fructose, D-glucose, D-galactose, D-mannose, and a deuterated analog of D-glucose, 6,6-D-glucose-d2, were studied. Among the technuques used in this effort were electrospray ionization (ESI), desorption/ionization on silicon (DIOS), matrix-assisted laser desorption/ionization (MALDI) and fast atom/ion bombardment (FAB) mass spectrometry. A series of ESI, DIOS, MALDI and FAB-MS experiments were used to obtain relative cation binding preferences of each monosaccharide. Heterodimers of 6,6-D-glucose-d2formed with each of the monosaccharides show that Na+binding for D-fructose, D-mannose and D-galactose is similar, while D-glucose was 25% weaker. Modeling studies and energy minimization calculations on the alpha and beta forms of the monosaccharide alkali cation complexes are consistent with the experimental data and indicate that D-fructose, D-galactose, and D-mannose undergo tridentate and tetradentate binding with Na+and Li+while D-glucose would only form a bidentate complex.

Theoretical study of microhydrated cyclo(L-pro)4-alkali cation complexes

2016 ◽  
Vol 1078 ◽  
pp. 37-46 ◽  
Author(s):  
Zahra Jafari Chermahini ◽  
Alireza Najafi Chermahini
Keyword(s):  
Theoretical Study ◽  
Alkali Cation ◽  
Cation Complexes

scholarly journals Topology and Electronic Density Driven Generation of Alkali Cation Complexes

2018 ◽  
Vol 24 (34) ◽  
pp. 8656-8663 ◽  
Author(s):  
Hamza Boufroura ◽  
Salomé Poyer ◽  
Anne Gaucher ◽  
Cécile Huin ◽  
Jean-Yves Salpin ◽  
...  
Keyword(s):  
Alkali Cation ◽  
Electronic Density ◽  
Cation Complexes
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