514. Valence vibration frequencies and hydrogen bond formation of sulphoxide and sulphone groups. (Absorption spectra and structure of organic sulphur compounds. Part V.)

Barnard, David T.; Fabian, Joyce M.; Koch, H.

doi:10.1039/jr9490002442

Cited by 134 publications

(31 citation statements)

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“…We have found that the correlation can be extended to include many more compounds, including both neutral molecules and ions, and S-OW as well as S-O frequencies. For sulphuryl compounds Barnard, Fabian, and Koch (19) used the mean of the symmetric and asymmetric stretching frequencies as a measure of the frequency that the SO vibration would have in the absence of coupling between the two SO bonds. A similar procedure has been used by Simon and Kriegsmann (17) in their discussion of the force constants of sulphuryl compounds.…”

Section: Correlation Of Stretching Frequencies With Bond Lengths and mentioning

confidence: 99%

The Sulphur–oxygen Bond in Sulphuryl and Thionyl Compounds: Correlation of Stretching Frequencies and Force Constants With Bond Lengths, Bond Angles, and Bond Orders

Gillespie¹,

Robinson²

1963

Can. J. Chem.

140

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I t is shown that the bond length of a n SO bond and the bond angle of an SO2 group may be very satisfactorily correlated with the SO stretching frequency. The bond-length -stretching-frequency relationship is used to predict some bond lengths that have not been measured and the OSO angles in some sulphuryl compounds are also calculated. The problem of defining and measuring the bond order of sulphur-oxygen bonds is discussed. I t is shown that there is a linear relationship between the force constant and the bond order and a non-linear relationship between the bond length and the bond order.

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Section: Correlation Of Stretching Frequencies With Bond Lengths and mentioning

confidence: 99%

The Sulphur–oxygen Bond in Sulphuryl and Thionyl Compounds: Correlation of Stretching Frequencies and Force Constants With Bond Lengths, Bond Angles, and Bond Orders

Gillespie¹,

Robinson²

1963

Can. J. Chem.

140

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“…This observation could be explained by an interchain interaction between the highly polar sulfoxide groups. This phenomenon has been reported before [27,29] as a polar interaction between two sulfinyl groups. The fact that in the n-octyl precursor this shoulder is not present would subscribe the assumption of a larger free volume in the n-octyl precursor polymer and thus a decreased interaction between sulfinyl groups.…”

Section: Effect Of the R-group Of The Sulfinyl Moiety On Eliminationmentioning

confidence: 70%

The elimination process of sulfinyl-precursor polymers towards poly(p-phenylene vinylene). Methods for monitoring elimination

Kok¹,

Breemen²,

Carleer³

et al. 1999

Acta Polym.

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The use of sulfinyl groups as thermally eliminable groups in precursor routes towards poly(para‐phenylene vinylene), PPV is relatively new and has not yet been fully explored. In this paper the elimination of sulfinyl groups in a sulfinyl precursor, poly[1,4‐phenylene (1‐n‐alkyl sulfinyl)‐ethylene], is evaluated by different techniques; Thermal Gravimetric Analysis, Direct Insert Probe Mass Spectrometry and Fourier Transform Infrared Spectroscopy. Oxidation of the conjugated polymer during elimination in function of different temperatures is investigated. The effect of temperature on the rate of elimination is semi‐quantitatively determined. The effect of different alkyl substituents on the elimination in the sulfinyl groups is evaluated. The process of conversion from sulfinyl precursor to PPV can be divided into three stages: evaporation of water associated with the hygroscopic sulfinyl groups, elimination of the sulfinyl groups and at least evaporation of the elimination products.

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“…This difference in the stability of sulfoxides and sulfones can be attributed to the difference in their S-O bond energies. 7) As has already been reported,1) the attempted alkylation of II or V with alkyl halide was unsuccessful. Since -these oxidation products have an acidic character, one would expect alkylations or acylations of the OH or the NH group to be feasible.…”

mentioning

confidence: 67%

Benzo-1, 4-thiazino[3,2-b]tropone 5-Oxides and 5, 5-Dioxides

Nozoe¹,

Asao²,

Takahashi³

1966

Bulletin of the Chemical Society of Japan

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The oxidation of benzo-1, 4-thiazino[3,2-b]tropone and its 8-isopropyl derivative with hydrogen peroxide afforded the corresponding 5-oxides or 5, 5-dioxides. The stability of these oxides to heating, acid and alkali was examined. The bromination or nitration of these oxides gave mainly 9-bromo or 9-nitro derivatives. 7- or 9-Aminobenzo-1, 4-thiazino[3,2-b]tropones were obtained by the reduction of the corresponding nitro compounds.

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514. Valence vibration frequencies and hydrogen bond formation of sulphoxide and sulphone groups. (Absorption spectra and structure of organic sulphur compounds. Part V.)

Cited by 134 publications

References 0 publications

The Sulphur–oxygen Bond in Sulphuryl and Thionyl Compounds: Correlation of Stretching Frequencies and Force Constants With Bond Lengths, Bond Angles, and Bond Orders

The Sulphur–oxygen Bond in Sulphuryl and Thionyl Compounds: Correlation of Stretching Frequencies and Force Constants With Bond Lengths, Bond Angles, and Bond Orders

The elimination process of sulfinyl-precursor polymers towards poly(p-phenylene vinylene). Methods for monitoring elimination

Benzo-1, 4-thiazino[3,2-b]tropone 5-Oxides and 5, 5-Dioxides

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