COMPOUNDS OF THE URANIUM-SELENIUM SYSTEM. PREPARATIONS. PHYSICAL AND CHEMICAL PROPERTIES (in French)
Journal Article
·
· Bull. soc. chim. France
OSTI ID:4051158
Eight definite compounds of the U-Se system were prepared: USe/sub 3/, USe/sub 2/ gamma , USe/sub 2/ alpha , USe/sub 2/ beta , U/sub 3/Se/sub 5/, U/sub 2/ >iSe/sub 3/, U/sub 3/Se/sub 4/, and USe. The uranium polyselenide USe/sub 3/ can be prepared by reaction of UCl/sub 4/ and Se in the presence of hydrogen, reaction of metallic uranium filings with H/sub 2/Se, and reaction of US/sub 2/ with H/sub 2/Se. The last reaction gives the purest yield. All the other selenides are prepared by successive elimination of the selenium by treatment under vacuum in a temperature range from 500 to 1500 deg C. A hydrogen current can also be used to eliminate the selenium. The crystallographic data and the densities of these compounds are tabulated. The chemical reactions with water, oxygen, sulfur, halogens, acids, alkali metals, and mercury are summarized. These compounds can be classified as those with ionic structure and those with metallic character. (J.S.R.)
- Research Organization:
- Faculte de Pharmacie, Paris
- NSA Number:
- NSA-15-016092
- OSTI ID:
- 4051158
- Journal Information:
- Bull. soc. chim. France, Journal Name: Bull. soc. chim. France Vol. Vol: No. 1
- Country of Publication:
- Country unknown/Code not available
- Language:
- French
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