scholarly journals The phenoxyl group-modulated interplay of cation–π and σ-type interactions in the alkali metal series

2020 ◽  
Vol 22 (46) ◽  
pp. 27105-27120
Author(s):  
Giacomo Prampolini ◽  
Marco d'Ischia ◽  
Alessandro Ferretti
Keyword(s):  
Alkali Metal ◽  
Noncovalent Interactions ◽  
Metal Cations ◽  
Alkali Metal Cations ◽  
Striking Effect

An extensive exploration of the interaction PESs of phenol and catechol complexes with alkali metal cations reveals a striking effect of –OH substitution on the balance between cation-π and σ-type noncovalent interactions.

Influence of Alkali Metal Cations on the Photodimerization of Bromo Cinnamates Studied by Solid-State NMR

2020 ◽  
Vol 124 (50) ◽  
pp. 27614-27620
Author(s):  
Marufa Zahan ◽  
He Sun ◽  
Sophia E. Hayes ◽  
Harald Krautscheid ◽  
Jürgen Haase ◽  
...  
Keyword(s):  
Solid State ◽  
Alkali Metal ◽  
Solid State Nmr ◽  
Metal Cations ◽  
Alkali Metal Cations

Derivation of Class II Force Fields. 4. van der Waals Parameters of Alkali Metal Cations and Halide Anions

1997 ◽  
Vol 101 (39) ◽  
pp. 7243-7252 ◽  
Author(s):  
Zhengwei Peng ◽  
Carl S. Ewig ◽  
Ming-Jing Hwang ◽  
Marvin Waldman ◽  
Arnold T. Hagler
Keyword(s):  
Alkali Metal ◽  
Force Fields ◽  
Van Der Waals ◽  
Metal Cations ◽  
Class Ii ◽  
Alkali Metal Cations ◽  
Halide Anions

Fluorescence enhancement of dibenzo-18-crown-6 by alkali metal cations

1980 ◽  
Vol 84 (9) ◽  
pp. 994-999 ◽  
Author(s):  
Haruo Shizuka ◽  
Kiyoshi Takada ◽  
Toshifumi Morita
Keyword(s):  
Alkali Metal ◽  
Fluorescence Enhancement ◽  
Metal Cations ◽  
Alkali Metal Cations

scholarly journals The Effects of Alkali Metal Cations and Common Anions on the Frog Skin Potential

1964 ◽  
Vol 47 (4) ◽  
pp. 749-771 ◽  
Author(s):  
Barry D. Lindley ◽  
T. Hoshiko
Keyword(s):  
Alkali Metal ◽  
Frog Skin ◽  
Ionic Composition ◽  
Metal Cations ◽  
Leopard Frog ◽  
Constant Field ◽  
Alkali Metal Cations ◽  
Ionic Selectivity ◽  
Skin Potential ◽  
Mean Values

The effects on the potential difference across isolated frog skin (R. catesbeiana, R. pipiens) of changing the ionic composition of the bathing solutions have been examined. Estimates of mean values and precision are presented for the potential changes produced by substituting other alkali metal cations for Na at the outside border and for K at the inside border. In terms of ability to mimic Na at the outside border of bullfrog skin, the selectivity order is Li > Rb, K, Cs; at the outside border of leopard frog skin, Li > Cs, K, Rb. In terms of ability to mimic K at the inside border of bullfrog and leopard frog skin: Rb > Cs > Li > Na. Orders of anion selectivity in terms of sensitivity of the potential for the outside border of bullfrog skin are Br > Cl > NO3 > I > SO4, isethionate and of leopard frog skin are Br, Cl > I, NO3, SO4. An effect of the solution composition (ionic strength?) on the apparent Na-K selectivity of the outside border is described. The results of the investigation have been interpreted and discussed in terms of the application of the constant field equation to the Koefoed-Johnsen-Ussing frog skin model. These observations may be useful in constructing and testing models of biological ionic selectivity.

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