29Si NMR Spectra of Silicon-Containing Uranium Complexes

The 17O, 13C, and 29Si NMR spectra of (CH3)3SiOC(O)R, CH3(XCH2)Si(OC(O)CH3)2, and R3GeOC(O)CH3 compounds are reported. In the 17O NMR spectra at 350 K the only signal is observed with the two latter series, but two well-resolved signals are displayed with the (CH3)3SiOC(O)R compounds. The equivalence of both oxygen atoms in carboxyl group on the NMR time scale is discussed from the viewpoint of a possible coordination of the oxygen atoms to the IVB group element of the periodic system.

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Syntheses, infrared and Raman vibrational spectra, normal coordinate analyses and 29Si-NMR-Spectra of halogenated disilanes XnSi2H6-n (X = F, Cl, Br, I)

Journal of Molecular Structure ◽

10.1016/0022-2860(95)08661-e ◽

1995 ◽

Vol 348 ◽

pp. 353-356 ◽

Cited By ~ 18

Author(s):

K. Hassler ◽

W. Köll ◽

K. Schenzel

Keyword(s):

Vibrational Spectra ◽

Nmr Spectra ◽

29Si Nmr ◽

Normal Coordinate ◽

29Si Nmr Spectra

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The relationship between the inner-shell electron energy-loss spectra and the 29Si NMR spectra of the chlorosilanes, SiHxCl4−x. An interpretation of the trend in NMR shieldings

Chemical Physics Letters ◽

10.1016/0009-2614(94)00048-4 ◽

1994 ◽

Vol 219 (1-2) ◽

pp. 65-74 ◽

Cited By ~ 3

Author(s):

J.A. Tossell

Keyword(s):

Energy Loss ◽

Electron Energy ◽

Nmr Spectra ◽

29Si Nmr ◽

Shell Electron ◽

29Si Nmr Spectra ◽

Electron Energy Loss ◽

The Relationship ◽

Electron Energy Loss Spectra

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Beiträge zur Chemie des Siliciums und Germaniums, XXXIX [1]. Darstellung, Eigenschaften und 29Si-NMR-Spektren von höheren Kaliumsilanylen KSinH2n+1 / Contributions to the Chemistry of Silicon and Germanium, XXXIX [1]. Preparation, Properties and 29Si-NMR Spectra of Higher Potassium Silanyls

Zeitschrift für Naturforschung B ◽

10.1515/znb-1985-1012 ◽

1985 ◽

Vol 40 (10) ◽

pp. 1301-1305 ◽

Cited By ~ 11

Author(s):

Franz Fehér ◽

Michael Krancher

Keyword(s):

High Field ◽

Nmr Spectra ◽

The Other ◽

29Si Nmr ◽

Reaction Conditions ◽

Low Field ◽

Field Shift ◽

29Si Nmr Spectra ◽

Silicon And Germanium

Diluted solutions of potassium disilanyl, 2-potassium trisilanyl and 2-potassium isotetrasilanyl in m onoglym e have been prepared from potassium silyl and di- or trisilane under suitable reaction conditions. The purity of the silanyls varies between 95 and 99%. Their stability increases from potassium di- to 2-potassium isotetrasilanyl. The 29Si NMR spectra exhibit a strong high field shift for the metal substituted silicon atoms and a m oderate low field shift for the other silicon atoms compared with the signals of the corresponding silanes.

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Assignment techniques for 29Si NMR spectra of pertrimethylsilylated products. 29Si satellites in 13C NMR spectra measured with selective 29Si decoupling

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19852060 ◽

1985 ◽

Vol 50 (9) ◽

pp. 2060-2064 ◽

Cited By ~ 11

Author(s):

Jaan Past ◽

Jüri Puskar ◽

Jan Schraml ◽

Endel Lippmaa

Keyword(s):

Nmr Spectra ◽

29Si Nmr ◽

13C Nmr Spectra ◽

Difference Spectroscopy ◽

Experimental Scheme ◽

H Nmr ◽

Correct Assignment ◽

Sensitivity And Selectivity ◽

29Si Nmr Spectra ◽

C Nmr

It is shown that measurement of 29Si satellites in proton decoupled 13C NMR spectra with selective 29Si decoupling allows correct assignment of lines in 29Si NMR spectra of pertrimethylsilylated products. The experimental scheme, where selective decoupling and FID phase alternation are used (difference spectroscopy), has sufficient sensitivity and selectivity, provided the 29Si lines are well separated. The main advantage of the method is that it can be applied to compounds with unresolved 1H NMR spectra or with no protons in γ position to the silicon atom.

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