Accession Number : AD0001772


Title :   THE PREPARATION OF A SOLID RHENIDE


Corporate Author : KANSAS UNIV LAWRENCE CHEMICAL LAB


Personal Author(s) : BRAVO, JUSTO B ; Griswold, Ernest ; Kleinberg, Jabcob


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/001772.pdf


Report Date : Jan 1953


Pagination or Media Count : 21


Abstract : Solid KRe (Science 115:375-376 1952) was purified by extraction with isopropyl alcohol. Analysis of the resulting gray solid showed it to be KRe . 4H sub 2 O of greater than 90% purity. The molar susceptibility at 20 deg C of the Kre . 4H sub 2 O, corrected for the diamagnetism of the KOH impurity, was about 240 x 10 to the minus power of 6 cgs magnetic units. As this degree of paramagnetism is less than that required for a substance with 1 unpaired electron, and the Re atom has 5 unpaired electrons, the formation of the Re ion probably involves a considerable modification in electronic configuration. The magnetic data support the suggestion of Pauling (Chem. Eng. News 25:2970-2973, 1947) that the tetrahydrate has a square planar structure which involves dsp(2) bonds.


Descriptors :   *ELECTRONICS , *RHENIUM ALLOYS , MAGNETIC FIELDS , ISOMERS , ELECTRONS , PURIFICATION , CONFIGURATIONS , PLANAR STRUCTURES , PARAMAGNETISM , PROPANOLS , DIAMAGNETISM


Subject Categories : Electrical and Electronic Equipment
      Metallurgy and Metallography


Distribution Statement : APPROVED FOR PUBLIC RELEASE