Electron Ionization Mass Spectrum of Tellurium Hexafluoride

被引：7

作者：

Clark, Richard A. ^{[1
]}

McNamara, Bruce K. ^{[2
]}

Barinaga, Charles J. ^{[1
]}

Peterson, James M. ^{[2
]}

Govind, Niranjan ^{[3
]}

Andersen, Amity ^{[3
]}

Abrecht, David G. ^{[1
]}

Schwantes, Jon M. ^{[1
]}

Ballou, Nathan E. ^{[1
]}

机构：

[1] Pacific NW Natl Lab, Natl Secur Directorate, Richland, WA 99352 USA

[2] Pacific NW Natl Lab, Energy & Environm Directorate, Richland, WA 99352 USA

[3] Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA

来源：

INORGANIC CHEMISTRY | 2015年 / 54卷 / 10期

基金：

美国能源部;

关键词：

RAMAN-SPECTRA; DITELLURIUM DECAFLUORIDE; THERMAL NF3; FLUORINATION; ENRICHMENT; CONSTANTS; ISOTOPES; SELENIUM; U3O8; TEF6;

D O I：

10.1021/acs.inorgchem.5b00342

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The electron ionization mass spectrum of tellurium hexafluoride (TeF6) is reported for the first time. The starting material was produced by direct fluorination of Te metal or TeO2 with nitrogen trifluoride. Formation of TeF6 was confirmed through cryogenic capture of the tellurium fluorination product and analysis through Raman spectroscopy. The eight natural abundance isotopes were observed for each of the set of fragment ions: TeF5+, TeF4+ TeF3+, TeF2+, TeF1+, and Te+, Te-2(+). A trend in increasing abundance was observed for the odd fluoride bearing ions, TeF1+ < TeF3+ < TeF5+, and a decreasing abundance was observed for the even fragment series, Te(F-0)(+) > TeF2+ > TeF4+ > TeF6+, with the molecular ion TeF6+ not observed at all. Density functional theory based electronic structure calculations were used to calculate optimized ground state geometries of these gas phase species, and their relative stabilities explain the trends in the data and the lack of observed signal for TeF6+.

引用

页码：4821 / 4826

页数：6

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