Temat: REGRESSION ANALYSIS - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Spectral correlations in some substituted styryl (E)-4-((2-oxopropyl) diazenyl) benzoic acids
Autorzy:: Sathiyendiran, V.
Sekar, K. G.
Thirunarayanan, G.
Arulkumaran, R.
Sundararajan, R.
Kamalakkannan, D.
Suresh, R.
Manikanadan, V.
Vijayakumar, R.
Vanangamudi, G.
Powiązania:: https://bibliotekanauki.pl/articles/412199.pdf
Data publikacji:: 2014
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: Oxo-propyl diazenyl benzoic acid chalcones
IR spectra
NMR spectra
Hammett equation
Regression analysis
Opis:: A series of titled compounds were prepared and analyzed their purities by literature method. The infrared and NMR spectral group frequencies of the compounds were assigned and correlated with Hammett substituent constants, F and R constants using single and multi linear regression analysis. From the results of statistical analysis, the effect of substituents on the above spectral frequencies was discussed.
Źródło:: International Letters of Chemistry, Physics and Astronomy; 2014, 11, 1; 33-43
2299-3843
Pojawia się w:: International Letters of Chemistry, Physics and Astronomy
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Infrared and 13C NMR Spectral Correlation Analysis of Some Substituted Oxazepin Based Ketone and Thione Derivatives with Hammett Constant
Autorzy:: Sathiyamoorthi, K.
Kamalakkannan, D.
Suresh, R.
Sakthinathan, S. P.
Arulkumaran, R.
Sundararajan, R.
Thirunarayanan, G.
Powiązania:: https://bibliotekanauki.pl/articles/1193044.pdf
Data publikacji:: 2016
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: Oxazepins
IR
13C NMR
Hammett constant
F and R parameter
Single and multi-regression analysis
Opis:: Single and multi-regression analysis was applied for the corrosion study of transmission of substituent effects on IR carbonyl stretching frequencies and 13C chemical shifts of some substituted oxazepin compounds. The substituent effects were estimated on the basis of results of the statistical analysis. The differences among the obtained regression coefficients were discussed in terms of the relative importance of the field, inductive and resonance effects of substituent.
Źródło:: World Scientific News; 2016, 58; 48-64
2392-2192
Pojawia się w:: World Scientific News
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Synthesis and Hammett spectral QSAR analysis of some (E)-1-(4-methoxyphenyl)-3-phenylprop-2-en-1-ones
Autorzy:: Vijayakumar, S.
Manikandan, V.
Arulkumaran, R.
Christuraj, P.
Sundararajan, R.
Thirunarayanan, G.
Powiązania:: https://bibliotekanauki.pl/articles/1076503.pdf
Data publikacji:: 2019
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: (E)-1-(4-methoxyphenyl)-3-phenylprop-2-en-1-ones
IR
NMR spectra
QSAR study
UV
regression analysis
Opis:: About nine substituted (E)-1-(4-methoxyphenyl)-3-phenylprop-2-en-1-ones have been synthesized by solvent-free method. These enones were analyzed by spectral techniques. The characteristic spectral frequencies were correlated through Hammett equation with Hammett substituent constants, F and R parameters using single and multi-regression analysis method. From the statistical analysis results, the quantitative structure activity relationships have been discussed by means of effects of substituents on the spectral frequencies.
Źródło:: World Scientific News; 2019, 115; 52-67
2392-2192
Pojawia się w:: World Scientific News
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 4.

Tytuł:: Correlation analysis of substituted 2-((phenyl amino)methyl)-1,2-dihydro-5-(3-methoxyphenyl)-1-phenyl-1,2,4-triazole-3-thiones
Autorzy:: Thirunarayanan, G.
Kamalkkannan, D.
Suresh, R.
Sakthinathan, S. P.
Sundararajan, R.
Arulkumara, R.
Manikandan, R.
Vanangamudi, G.
Sathiyendiran, V.
Powiązania:: https://bibliotekanauki.pl/articles/1194047.pdf
Data publikacji:: 2015
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: 1-2-4-triazole
Hammett constants
IR spectral
NMR spectral
Swain-Lupton’s parameters
correlation
multi-regression analysis
Opis:: A series of substituted 2-((phenyl amino)methyl)-1,2-dihydro-5-(3-methoxyphenyl)-1-phenyl-1,2,4-triazole-3-thione compounds were synthesized and examined their purities as per the literature. The IR spectra of νC=N, νC=S, νNH and νCOC frequencies and NMR chemical shifts (ppm) of δNH, δOCH3, δCH2, δC=N, δC=S, δOCH3 and δCH2 are also assigned. The assigned IR and both 1H NMR and 13C NMR spectral data have been correlated with Hammett substituent constants and Swain-Lupton’s parameters using single and multi-linear regression analysis. From the results of statistical analysis, the effect of substituents on the above spectral data has been studied.
Źródło:: World Scientific News; 2015, 12; 24-43
2392-2192
Pojawia się w:: World Scientific News
Dostawca treści:: Biblioteka Nauki

Artykuł

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