Solvent effects on i.r. bending frequency of NH2 and on stretching frequency of CS groups of primary thioamides and related compounds

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Abstract

Infrared frequencies of NH2 symmetrical in-plane bending (βsNH2) and CS stretching (νCS) bands of primary thioamides, thiourea and thiosemicarbazides have been measured in various solvents. The slope of the BHW plot of βsNH2 bands has been related with the proton donor ability of the compounds. A non-linear relationship has been found between Kagiya's R-values and the relative frequency shifts. νCS bands show small frequency shifts. These frequencies are lower in more polar solvents, due to the dipolar form of thioamides.

Original languageEnglish
Pages (from-to)801-804
Number of pages4
JournalSpectrochimica Acta Part A: Molecular Spectroscopy
Volume37
Issue number9
DOIs
Publication statusPublished - 1981

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Stretching
Thioureas
Protons
Infrared radiation

ASJC Scopus subject areas

  • Engineering(all)

Cite this

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title = "Solvent effects on i.r. bending frequency of NH2 and on stretching frequency of CS groups of primary thioamides and related compounds",
abstract = "Infrared frequencies of NH2 symmetrical in-plane bending (βsNH2) and CS stretching (νCS) bands of primary thioamides, thiourea and thiosemicarbazides have been measured in various solvents. The slope of the BHW plot of βsNH2 bands has been related with the proton donor ability of the compounds. A non-linear relationship has been found between Kagiya's R-values and the relative frequency shifts. νCS bands show small frequency shifts. These frequencies are lower in more polar solvents, due to the dipolar form of thioamides.",
author = "P. Vinkler",
year = "1981",
doi = "10.1016/0584-8539(81)80083-9",
language = "English",
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pages = "801--804",
journal = "Spectrochimica Acta - Part A Molecular Spectroscopy",
issn = "0584-8539",
publisher = "Pergamon Press Ltd.",
number = "9",

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T1 - Solvent effects on i.r. bending frequency of NH2 and on stretching frequency of CS groups of primary thioamides and related compounds

AU - Vinkler, P.

PY - 1981

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N2 - Infrared frequencies of NH2 symmetrical in-plane bending (βsNH2) and CS stretching (νCS) bands of primary thioamides, thiourea and thiosemicarbazides have been measured in various solvents. The slope of the BHW plot of βsNH2 bands has been related with the proton donor ability of the compounds. A non-linear relationship has been found between Kagiya's R-values and the relative frequency shifts. νCS bands show small frequency shifts. These frequencies are lower in more polar solvents, due to the dipolar form of thioamides.

AB - Infrared frequencies of NH2 symmetrical in-plane bending (βsNH2) and CS stretching (νCS) bands of primary thioamides, thiourea and thiosemicarbazides have been measured in various solvents. The slope of the BHW plot of βsNH2 bands has been related with the proton donor ability of the compounds. A non-linear relationship has been found between Kagiya's R-values and the relative frequency shifts. νCS bands show small frequency shifts. These frequencies are lower in more polar solvents, due to the dipolar form of thioamides.

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JO - Spectrochimica Acta - Part A Molecular Spectroscopy

JF - Spectrochimica Acta - Part A Molecular Spectroscopy

SN - 0584-8539

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