The Molecular Structure of Trimethylindium by Vapor Phase Electron Diffraction

1974 ◽  
Vol 52 (23) ◽  
pp. 3936-3940 ◽  
Author(s):  
Gerald Barbe ◽  
J. Lawrence Hencher ◽  
Quang Shen ◽  
Dennis G. Tuck
Keyword(s):  
Molecular Structure ◽  
Electron Diffraction ◽  
Root Mean Square ◽  
Vapor Phase ◽  
Axial Symmetry ◽  
Structural Parameters ◽  
Phase Factor ◽  
Methyl Groups ◽  
Mean Square ◽  
Shrinkage Effect

The molecular structure of trimethylindium has been redetermined by vapor phase electron diffraction. The independent structural parameters assuming three-fold axial symmetry based on the rg distances and their estimated uncertainties (2σ) are r(InC) = 209.3 ± 0.6 pm, r(CH) = 114 ± 3 pm, and < HCIn = 112.7 ± 0.8°. A slight nonplanarity (3.0 ± 2.5°) was attributed to a shrinkage effect in [Formula: see text] of 0.4 pm. The analysis was insensitive to the rotational position of the methyl groups relative to the InC3 frame. The root mean square amplitudes were not accurate due to a problem with the indium phase factor.

Die Molekülstruktur des Trifluorsilylphosphans (F3SiPH2) / Molecular Structure of Trifluorosilylphosphane (F3SiPH2)

1973 ◽  
Vol 28 (11) ◽  
pp. 1862-1865 ◽  
Author(s):  
R. Demuth ◽  
H. Oberhammer
Keyword(s):  
Molecular Structure ◽  
Electron Diffraction ◽  
Gas Phase ◽  
Structural Parameters ◽  
Bond Distance ◽  
The Other ◽  
Mean Square

The molecular structure of trifluorosilylphosphane in the gas phase has been determined by electron diffraction. A short P -Si bond distance of 2.207 (3) Å as compared to other investigated silysphosphanes was found for this molecule. The other structural parameters and mean square amplitudes are given in the article.

Die Molekülstruktur des N-Chlorsdiwefeloxiddifluoridimids ClNSOF2 / The Molecular Structure of ClNSOF2

1974 ◽  
Vol 29 (6) ◽  
pp. 901-904 ◽  
Author(s):  
O. Oberhammer ◽  
O. Glemser ◽  
H. Klüver
Keyword(s):  
Molecular Structure ◽  
Electron Diffraction ◽  
Geometric Parameters ◽  
Mean Square ◽  
The Mean

The molecular structure of ClNSOF2 was determined by electron diffraction of gases. The following geometric parameters were obtained:Cl-N=1.715(5), S=N=1.484(7), S=O=1.394(3), S-F=1.548(3) Å, ∢ ClNS=114.7 (8), ∢ FSF=92.6(.8), ∢ NSF=111.8(.9) ∢ NSO=117.4 (3.1) and ∢ OSF=108.6 (.8)°. The results for the mean square amplitudes of vibration are given in the paper and an attempt is made to explain differences in corresponding parameters of some related molecules.

An Electron-Diffraction Investigation of the Molecular Structure of Toluene

1977 ◽  
Vol 32 (9) ◽  
pp. 1063-1064 ◽  
Author(s):  
Takao Iijima
Keyword(s):  
Molecular Structure ◽  
Electron Diffraction ◽  
Gas Phase ◽  
Structural Parameters ◽  
Electron Diffraction Investigation ◽  
Gas Phase Electron Diffraction

AbstractThe structural parameters of toluene have been deter­ mined by gas-phase electron diffraction. The bond distances in rg are as follows: C-C(ring) 1.399± 0.002 Å, C-C (me­thyl) 1.524± 0.007 Å, C -H(ring) 1.11 ± 0.01 Å. and C-H-(methyl) 1.10 ±0.02 Å.

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