16069-36-6Relevant articles and documents
NMR spectra of guest-host complexes of boron and silicon fluorides with crown ethers in nonaqueous solutions
Gel'mbol'dt,Selig,Ganin,Fonar',Ennan
, p. 150 - 151 (2001)
19F, 11B, and 29Si NMR spectroscopy was used to examine the behavior of the guest-host complexes (BF3·H2O) 2·18-crown-6·2H2O, (BF3·H2O)2·DCH-6B,
Conductance study of binding of some Rb+ and Cs+ ions by macrocyclic polyethers in acetonitrile solution
Shamsipur, Mojtaba,Saeidi, Mahboubeh
, p. 1187 - 1198 (2007/10/03)
A conductance study of the interaction between Rb+ and Cs+ ions and 18-crown-6 (18C6), dicyclohexyl-18-crown-6 (DC18C6), dibenzo-18-crown-6 (DB18C6), dibenzo-24-crown-8 (DB24C8), and dibenzo-30-crown-10 (DB30C10) in acetonitrile solution has been carried out at various temperatures. The formation constants of the resulting 1:1 complexes were determined from the molar conductance-mole ratio data and found to vary in the order DC18C6 > 18C6 > DB30C10 > DB18C6 ~ DB24C8 for Rb+ ion and DC18C6 > 18C6 > DB30C10 ~ DB24C8 > DB18C6 for Cs+ ion. The enthalpy and entropy of complexation were determined from the temperature dependence of the formation constants. The complexes with the 18-crowns are both enthalpy and entropy stabilized while, in the case of large crown ethers, the corresponding complexes are enthalpy stabilized but entropy destabilized.
SYNTHESIS OF CYCLOHEXANOCROWN ETHERS UNDER CONDITIONS OF PHASE-TRANSFER CATALYSIS
Kusov, S. Z.,Lubenets, E. G.,Kobrin, V. S.
, p. 1234 - 1236 (2007/10/02)
A method was described for production of individual diastereoisomers of cyclohexanocrown ethers from the cis and trans isomers of 1,2-bis(6-chloro-1,4-dioxahexyl)cyclohexane and glycols with phase transfer catalysis.