Massenspektrometrische untersuchungen an halogeniden des Rheniums und Technetiums

Rinke, Klaus; Klein, Michael L.; Schäfer, Harald

doi:10.1016/0022-5088(67)90022-7

Cited by 21 publications

(13 citation statements)

References 14 publications

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“…As expected the valence force constants of the Tc complexes were found to be slightly smaller than those of the Re complexes [110,111 ]. The EPR hyperfine structure of tetravalent 99 (Fig. 4) was detected and discussed.…”

Section: Halide Ligandsmentioning

confidence: 76%

“…Among the long-lived isotopes of technetium, only 99 Tc can be obtained in weighable amounts. It may be produced by either neutron irradiation of highly purified molybdenum or neutron-induced fission of uranium-235.…”

Section: Production and Isolationmentioning

confidence: 99%

“…99 Tc is formed by spontaneous fission of 238 U as well as [10] who isolated about 10~3 jug "Tc from 5.3 kg of pitchblende.…”

Section: Discovery and Occurrencementioning

confidence: 99%

“…The scheme described in Fig. 1 The handling of 99 Tc on a small scale (< 20 mg) does not present a danger to health provided some elementary precautions are taken. Technetium can be handled in a well ventilated fume cupboard.…”

Section: Production and Isolationmentioning

confidence: 99%

“…The trimeric molecules Tc 3 Cl 9 and Tc 3 Cl 12 as well as all the mixed molecules of (Re, Tc) 3 Cl 9 were observed by mass spectrometry [99].…”

Section: Halides and Oxide Halidesmentioning

confidence: 99%

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The Present Status of Technetium Chemistry

Schwochau

1983

Radiochimica Acta

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Technetium is the lightest artificial radioelement. Traces of "Tc occur in the earth's crust, weighable amounts are formed in high yield by the fission of 2 3 5 U. The laboratory handling of "Tc needs no special radiation protection. The chemical behaviour and the complex chemistry of the transition element resemble closely those of the homologous element rhenium. Some uses of technetium are demonstrated.

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Section: Halide Ligandsmentioning

confidence: 76%

Section: Production and Isolationmentioning

confidence: 99%

“…99 Tc is formed by spontaneous fission of 238 U as well as [10] who isolated about 10~3 jug "Tc from 5.3 kg of pitchblende.…”

Section: Discovery and Occurrencementioning

confidence: 99%

Section: Production and Isolationmentioning

confidence: 99%

“…The trimeric molecules Tc 3 Cl 9 and Tc 3 Cl 12 as well as all the mixed molecules of (Re, Tc) 3 Cl 9 were observed by mass spectrometry [99].…”

Section: Halides and Oxide Halidesmentioning

confidence: 99%

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The Present Status of Technetium Chemistry

Schwochau

1983

Radiochimica Acta

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Binary compounds and oxide halides

Schwochau

2000

Technetium

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Gasförmige Chloridkomplexe mit Halogenbrücken‐Homöokomplexe und Heterokomplexe

Schäfer

1976

Angewandte Chemie

115

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Die Chemie der in den letzten Jahren in g r o k r Zahl beobachteten gasformigen Halogenidkomplexe wird am Beispiel der Chloride behandelt. -Homookomplexe, durch CI-Briicken verkniipfte dimere oder auch polymere Chloridmolekiile (z.B. (NaCI),, n = 2 4 ; (CuCI),, n = 2-5; (BeCI,),. n = 2-4; Pd&I1 2)r treten in weiten Bereichen des Periodensystems auf. Besonders aufschluBreich ist der Vergleich der Dissoziationsenthalpie solcher Molekiile mit der Verdampfungsenthalpie der fliissigen Chloride. Heterokomplexe sind aus verschiedenen Chloridmolekiilen durch Verkniipfung iiber CI-Briicken aufgebaut. Neben 1 : I-Komplexen (z. B. NaAIC14, TlPbC13, KThC15, CdPbC14, AIUCls) sind auch groDere Molekiile (z. B. CoAl2CI8, CrAl3CIl2, Cu2UCI6, InzUCllo) bekannt. Formeltypen und Strukturen und vor allem Bildungsenthalpien solcher Komplexe werden kritisch erortert. -Heterokomplexe sind bei Chemischen Transportreaktionen, als Reaktionsvermittler bei Synthesen und bei gaschromatographischen Trennungen (Lanthanoide, Actinoide) nutzbar. Sie spielen bei manchen technischen Prozessen (Erzchlorierungen) sowie bei neu entwickelten Typen von Hochdruckentladungslampen eine Rolle.

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Massenspektrometrische untersuchungen an halogeniden des Rheniums und Technetiums

Cited by 21 publications

References 14 publications

The Present Status of Technetium Chemistry

The Present Status of Technetium Chemistry

Binary compounds and oxide halides

Gasförmige Chloridkomplexe mit Halogenbrücken‐Homöokomplexe und Heterokomplexe

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