Solutions of Alkali Metals in Polyethers. I

Abstract

Potassium, rubidium, and cesium have been found to dissolve in 1,2-dimethoxyethane and some of its homologs to give blue, electrically conducting solutions. Although sodium alone is insoluble it is carried into solution by solvents already containing potassium. Approximate values for the solubilities and electrical conductivities are given at several temperatures. The optical absorption spectra for the region 300 mil to 2.5 .Il and the results of electron paramagnetic resonance studies are reported. Many features of these solutIOns clearly parallel those of the corresponding solutions of alkali metals in liquid ammonia or in amines. The properties of rubidium solutions are distinctly different from those of the other alkali metal solutions.

Pulse Radiolytic Formation of Solvated Electrons, Ion-pairs, and Alkali Metal Anions in Tetrahydrofuran

“…THF Sol~itioizs Cotztairzing K -and NaBlue solutions of alkali metals in ethers were first reported by Down et al (25,26). Since that tinie solutions of potassium in T H F and D M E have been studied by electrical conductance (27). optical absorption (15,24,27,28), and e.s.r.…”

“…Since that tinie solutions of potassium in T H F and D M E have been studied by electrical conductance (27). optical absorption (15,24,27,28), and e.s.r. (12,24).…”

Solvated electrons and the effect of coordination on the optical spectra of alkali metal cation – electron pairs in ethers

“…Optical (3), electron spin resonance (esr) (4,5), conductivity (6), flash photolysis (7)(8)(9), and pulse radiolysis (10)(11)(12) techniques have now clearly established the contribution of solvated electrons, e,-, cation-electron aggregates (M', e,-), and alkali metal anions M-to the chemistry of such solutions.…”

Use of cryptates in anionic polymerization. II. Solutions of alkali metals and their complexes with polycyclic hydrocarbons

“…As shown in (13), we have reported a new technique for dissolving alkali metals in the presence of macroheterobicycles in solvents in which they are ordinarily either insoluble or only slightly soluble, which is to obtain more stable metal solutions than those described before (6)(7)(8)(9)(10)(11)(12). Some examples are listed in Table I.…”