Accession Number:

AD0001772

Title:

THE PREPARATION OF A SOLID RHENIDE

Descriptive Note:

Corporate Author:

KANSAS UNIV LAWRENCE CHEMICAL LAB

Report Date:

1953-01-01

Pagination or Media Count:

21.0

Abstract:

Solid KRe Science 115375-376 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 252970-2973, 1947 that the tetrahydrate has a square planar structure which involves dsp2 bonds.

Subject Categories:

  • Electrical and Electronic Equipment
  • Metallurgy and Metallography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE