Vibrational spectra and structure of organogermanes. Normal modes and force constants for trimethylchlorogermane

Durig, J. R.; Lau, K. K.; Turner, J. B.; Bragin, J.

doi:10.1016/0022-2852(69)90372-5

Cited by 41 publications

(12 citation statements)

References 18 publications

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“…The a, mode, v,,, is inactive in the infrared and too weak to be seen in the Raman spectrum but calculations give a frequency of 723 cm-' for this vibration. These results are consistent with those currently accepted for the analysis of other methyl-germanium compounds (3,4). A depolarized band at 132 cm-' is attributable to the remaining GeC, rock, v,,.…”

Section: Lodo(trimethyl)germane (Ch) Gelsupporting

confidence: 91%

“…This accidental degeneracy has been observed in other systems (4,5) but it is interesting to note that the polarization data give no indication of the near coincidence of the symmetric and asymmetric deformations.…”

Section: Lodo(trimethyl)germane (Ch) Gelmentioning

confidence: 65%

“…The vibrational spectra of the chloro-and bromo(methyl)germanes, (CH3),GeX4-, (X = C1, Br; n = 1,2, and 3) have been studied by several workers (1)(2)(3)(4)(5)(6)(7). The work reported here is part of a continuing program on the vibrational analyses of various methylated and halogenated derivatives of germane.…”

Section: Introductionmentioning

confidence: 99%

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The Vibrational Spectra of Silane and Germane Derivatives. Part IV. The Infrared and Raman Spectra of the Iodo(methyl)germanes

Anderson¹,

Barker²,

And³

et al. 1971

Can. J. Chem.

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Section: Lodo(trimethyl)germane (Ch) Gelsupporting

confidence: 91%

Section: Lodo(trimethyl)germane (Ch) Gelmentioning

confidence: 65%

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The Vibrational Spectra of Silane and Germane Derivatives. Part IV. The Infrared and Raman Spectra of the Iodo(methyl)germanes

Anderson¹,

Barker²,

And³

et al. 1971

Can. J. Chem.

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“…The Ge-C stretching vibrations in 1-3 are assignable to peaks at essentially the same positions and relative intensities in both effects as reported for Me,GeCl,, 638 and 579 cm-' respectively, for the asymmetric and symmetric stretches (39). This is to be expected because the Ge-C bond lengths and C-Ge-C bond angles are' similar in 1 and Me,GeCl,, as discussed above, and the similarity in structure presumably extends to 2 and 3.…”

Section: Infrared and Raman Spectrasupporting

confidence: 66%

Synthesis and characterization of O, O-alkylene dithiophosphate derivatives of dimethyl-and trimethylgermane. Crystal structure of

Drake¹,

Mislankar²,

Ratnani³

1994

Can. J. Chem.

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The O, O-alkylene dithiophosphate derivatives of dimethyl- and trimethylgermane [Formula: see text], [Formula: see text], [Formula: see text],[Formula: see text], [Formula: see text], and Me3Ge[S2POCH2CEt2CH2O] have been prepared in 70–85% yields by reaction of the salts of the appropriate O,O-alkylene dithiophosphoric acid with dichlorodimethyl-and chlorotrimethylgermane. The compounds were characterized by infrared, Raman, and 1H, 13C, and 31P NMR spectroscopy. The crystal structure of [Formula: see text], was determined and it crystallizes as monoclinic in the space group P21/a (No. 14) with the cell parameters a = 12.368(6) Å, b = 6.897(2) Å, c = 17.923(3) Å, β = 99.00(3)°, V = 2450(2) Å3, Z = 4, R = 0.0455, and Rw = 0.0394. The environment about germanium is essentially that of a distorted tetrahedron resulting in a S—Ge—S angle of 89.9(1)° and a C—Ge—C angle of 121.6(5)°. In contrast with analogous non-cyclic diorganodithiophosphatogermanes, the terminal sulfur atoms are oriented towards germanium rather than away from it to give an average [Formula: see text] intramolecular distance of 3.49(3) Å. The spectra are interpreted as indicating that the dithiophosphate groups are linked in identical fashion in all compounds 1–6. The 1H and 13C NMR spectra are of particular interest in that, unlike the spectra reported previously for related species, the substituents on the atoms in both the five- and six-membered rings maintain their non-equivalence in solution.

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“…The assignment of the experimental wavenumbers to the normal modes of vibration was made taking into account previous assignments [13,14] (Table S5, Supporting Information), the normal vibration forms, and the comparison of the vibrational wavenumbers and intensities obtained from the experimental measurements and from the calculations. The observed bands in each vibrational spectrum, along with their relative intensities asnd polarization ratios are shown in Table 1.…”

Section: Band Assignmentsmentioning

confidence: 99%

Study of the vibrational spectra of (CH₃)₃GeCl from experimental and DFT calculations

Roldán

Brandán

Navarro

et al. 2009

J Raman Spectroscopy

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New infrared (for gas and liquid phase) and Raman (for liquid) spectra were measured for the chlorotrimethylgermane to obtain a complete assignment of its fundamental modes. The measurement of the low-temperature infrared spectrum together with the application of Fourier self-deconvolution to the Raman spectra resolves the C-H vibrational modes into their components. The Rauhut and Pulay scaled quantum mechanical (SQM) force field methodology and the wavenumber-linear scaling (WLS) method were used to predict the vibrational spectra as a guide to the assignment of the fundamental bands. A quantum mechanical analysis was carried out to obtain the harmonic force field.

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Vibrational spectra and structure of organogermanes. Normal modes and force constants for trimethylchlorogermane

Cited by 41 publications

References 18 publications

The Vibrational Spectra of Silane and Germane Derivatives. Part IV. The Infrared and Raman Spectra of the Iodo(methyl)germanes

The Vibrational Spectra of Silane and Germane Derivatives. Part IV. The Infrared and Raman Spectra of the Iodo(methyl)germanes

Synthesis and characterization of O, O-alkylene dithiophosphate derivatives of dimethyl-and trimethylgermane. Crystal structure of

Study of the vibrational spectra of (CH₃)₃GeCl from experimental and DFT calculations

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Vibrational spectra and structure of organogermanes. Normal modes and force constants for trimethylchlorogermane

Cited by 41 publications

References 18 publications

The Vibrational Spectra of Silane and Germane Derivatives. Part IV. The Infrared and Raman Spectra of the Iodo(methyl)germanes

The Vibrational Spectra of Silane and Germane Derivatives. Part IV. The Infrared and Raman Spectra of the Iodo(methyl)germanes

Synthesis and characterization of O, O-alkylene dithiophosphate derivatives of dimethyl-and trimethylgermane. Crystal structure of

Study of the vibrational spectra of (CH3)3GeCl from experimental and DFT calculations

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Study of the vibrational spectra of (CH₃)₃GeCl from experimental and DFT calculations