Cooperative and selective lithium complexation of 2,11,13,22-tetraaza-5,8,16,19- tetraoxa-1,12-dioxocyclodocosanes.
[reaction: see text] Ureyleno crown ethers 2 and 3 bind with 2 equiv of Li(+) cooperatively and selectively over other alkali metal ions such as Na(+), K(+), and Cs(+). The binding constant for 3 was found to be 3.0 x 10(7) (L/mol)(2).
Chen
J A
JA
Department of Chemistry, National Taiwan University, Taipei, Taiwan 106, Republic of China.
Lai
J L
JL
Lee
G H
GH
Wang
Y
Y
Su
J K
JK
Yeh
H C
HC
Lin
W Y
WY
Leung
M
M
D001372:Aza Compounds / Q000737:chemistry*; D018360:Crystallography, X-Ray; D004988:Ethers, Cyclic / Q000737:chemistry*; D006573:Heterocyclic Compounds, 1-Ring / Q000737:chemistry*; D008094:Lithium / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D013050:Spectrometry, Fluorescence
D001372:Aza Compounds; D004988:Ethers, Cyclic; D006573:Heterocyclic Compounds, 1-Ring; D008094:Lithium