PHOSPHORUS-CONTAINING PODANDS .10. AN IMPROVED METHOD FOR SYNTHESIZING OLIGO(ETHYLENE GLYCOL) BIS[2-(DIPHENYLPHOSPHINOYL)ETHYL] ETHERS AND THEIR COMPLEX-FORMING PROPERTIES WITH RESPECT TO ALKALI-METAL-CATIONS IN ANHYDROUS ACETONITRILE

Authors
EVREINOV VI BAULIN VE VOSTROKNUTOVA ZN TSVETKOV EN
Citation
Vi. Evreinov et al., PHOSPHORUS-CONTAINING PODANDS .10. AN IMPROVED METHOD FOR SYNTHESIZING OLIGO(ETHYLENE GLYCOL) BIS[2-(DIPHENYLPHOSPHINOYL)ETHYL] ETHERS AND THEIR COMPLEX-FORMING PROPERTIES WITH RESPECT TO ALKALI-METAL-CATIONS IN ANHYDROUS ACETONITRILE, Russian chemical bulletin, 42(3), 1993, pp. 472-477
Citations number
26
Categorie Soggetti
Chemistry
Journal title
Russian chemical bulletin → ACNP
ISSN journal
10665285
Volume
42
Issue
3
Year of publication
1993
Pages
472 - 477
Database
ISI
SICI code
1066-5285(1993)42:3<472:PP.AIM>2.0.ZU;2-O
Abstract
An improved preparative method for the synthesis of oligo(ethylene gly col) bis[2-(diphenylphosphinoyl)ethyl] ethers has been developed. The complex-forming ability of these ligands toward alkali-metal cations h as been studied by conductometry in anhydrous MeCN at 25-degrees-C. Li gands of this type have been shown to be highly efficient and selectiv e complexing agents with respect to the Li+ cation. The stability seri es of the complexes M+L has the form Li > Na > K > Rb in all cases. Th e complexing properties and selectivity displayed by these new monopod ands in MeCN have been compared with those in the THF-CHCl3 (4:1) syst em studied previously.