Isotopic effects occuring during the evaporation of microgram quantities of chemically pure rubidium, potassium and lithium compounds are studied. The measured isotopic ratios show a time dependent variation corresponding to a RAYLEIGH distillation. The fractionation factor is equal to the square root of the ratio of the masses. The highest observed enrichments are 45% for lithium, 10% for pota...

case of 18 kN, a considerable portion of the particles are mechanically broken. The structure is condensed nearly without cavities. It might be useful to prepare pellets of high density, as the diffusion coefficient of tritium in Li,SiO, or Li4Si04 is on the order of 2 magnitudes higher than in the other lithium compounds.’ Li2Si03.nH20 is X-ray amorphous. ‘ A considerable portion of the powder...

The first examples of an amido-distibene, L(†)Sb[double bond, length as m-dash]SbL(†) (L(†) = -N(Ar(†))(SiPr(i)3), Ar(†) = C6H2{C(H)Ph2}2Pr(i)-2,6,4), and a boryl dibismuthene, {(DAB)B}Bi[double bond, length as m-dash]Bi{B(DAB)} (DAB = {(C6H3Pr(i)2-2,6)NCH}2, have been prepared by reaction of a lithium boryl complex, (THF)2LiB(DAB), with extremely bulky amido-group 15 dihalide precursor compoun...

A series of new compounds was discovered during the study of a novel solid lithium-ion battery electrolyte system based on succinonitrile. The phases LiX(succinonitrile)2 (X = PF6, AsF6, ClO4) were identified as undesirable phases that formed at low salt concentrations in succinonitrile. The silver analogues of these systems also exist as crystalline phases, but the lithium salts do not share t...

The reaction between bis(p-methoxyphenyl)telluroxide and various substituted phenylhydrazines has recently been reported [1]. In this reaction the phenylhydrazines are converted to the corresponding hydrocarbons and nitrogen, also producing bis(p-methoxyphenyl)telluride and an unsymmetrical telluride, resulting form aryl exchange. As a part of our investigation of the reactions of tellurium dio...

A selective and practical bromine-metal exchange on bromoheterocyclics bearing substituents with an acidic proton under non-cryogenic conditions was developed by a simple modification of an existing protocol. Our protocol of using a combination of i-PrMgCl and n-BuLi has not only solved the problem of intermolecular quenching that often occurred when using alkyl lithium alone as the reagent for...